{"id":6,"date":"2018-09-29T13:01:35","date_gmt":"2018-09-29T05:01:35","guid":{"rendered":"http:\/\/localhost\/qing\/wordpress\/?p=6"},"modified":"2018-09-29T13:18:51","modified_gmt":"2018-09-29T05:18:51","slug":"test","status":"publish","type":"post","link":"https:\/\/adeqing.com\/index.php\/2018\/09\/29\/default\/6\/","title":{"rendered":"ECMAScript 6\u7b80\u4ecb"},"content":{"rendered":"<h1 id=\"ecmascript-6\u7b80\u4ecb\">ECMAScript 6\u7b80\u4ecb<\/h1>\n<p>ECMAScript 6.0\uff08\u4ee5\u4e0b\u7b80\u79f0ES6\uff09\u662fJavaScript\u8bed\u8a00\u7684\u4e0b\u4e00\u4ee3\u6807\u51c6\uff0c\u5df2\u7ecf\u57282015\u5e746\u6708\u6b63\u5f0f\u53d1\u5e03\u4e86\u3002\u5b83\u7684\u76ee\u6807\uff0c\u662f\u4f7f\u5f97JavaScript\u8bed\u8a00\u53ef\u4ee5\u7528\u6765\u7f16\u5199\u590d\u6742\u7684\u5927\u578b\u5e94\u7528\u7a0b\u5e8f\uff0c\u6210\u4e3a\u4f01\u4e1a\u7ea7\u5f00\u53d1\u8bed\u8a00\u3002<\/p>\n<h2 id=\"ecmascript\u548cjavascript\u7684\u5173\u7cfb\">ECMAScript\u548cJavaScript\u7684\u5173\u7cfb<\/h2>\n<p>\u4e00\u4e2a\u5e38\u89c1\u7684\u95ee\u9898\u662f\uff0cECMAScript\u548cJavaScript\u5230\u5e95\u662f\u4ec0\u4e48\u5173\u7cfb\uff1f<\/p>\n<p>\u8981\u8bb2\u6e05\u695a\u8fd9\u4e2a\u95ee\u9898\uff0c\u9700\u8981\u56de\u987e\u5386\u53f2\u30021996\u5e7411\u6708\uff0cJavaScript\u7684\u521b\u9020\u8005Netscape\u516c\u53f8\uff0c\u51b3\u5b9a\u5c06JavaScript\u63d0\u4ea4\u7ed9\u56fd\u9645\u6807\u51c6\u5316\u7ec4\u7ec7ECMA\uff0c\u5e0c\u671b\u8fd9\u79cd\u8bed\u8a00\u80fd\u591f\u6210\u4e3a\u56fd\u9645\u6807\u51c6\u3002\u6b21\u5e74\uff0cECMA\u53d1\u5e03262\u53f7\u6807\u51c6\u6587\u4ef6\uff08ECMA-262\uff09\u7684\u7b2c\u4e00\u7248\uff0c\u89c4\u5b9a\u4e86\u6d4f\u89c8\u5668\u811a\u672c\u8bed\u8a00\u7684\u6807\u51c6\uff0c\u5e76\u5c06\u8fd9\u79cd\u8bed\u8a00\u79f0\u4e3aECMAScript\uff0c\u8fd9\u4e2a\u7248\u672c\u5c31\u662f1.0\u7248\u3002<\/p>\n<p>\u8be5\u6807\u51c6\u4ece\u4e00\u5f00\u59cb\u5c31\u662f\u9488\u5bf9JavaScript\u8bed\u8a00\u5236\u5b9a\u7684\uff0c\u4f46\u662f\u4e4b\u6240\u4ee5\u4e0d\u53ebJavaScript\uff0c\u6709\u4e24\u4e2a\u539f\u56e0\u3002\u4e00\u662f\u5546\u6807\uff0cJava\u662fSun\u516c\u53f8\u7684\u5546\u6807\uff0c\u6839\u636e\u6388\u6743\u534f\u8bae\uff0c\u53ea\u6709Netscape\u516c\u53f8\u53ef\u4ee5\u5408\u6cd5\u5730\u4f7f\u7528JavaScript\u8fd9\u4e2a\u540d\u5b57\uff0c\u4e14JavaScript\u672c\u8eab\u4e5f\u5df2\u7ecf\u88abNetscape\u516c\u53f8\u6ce8\u518c\u4e3a\u5546\u6807\u3002\u4e8c\u662f\u60f3\u4f53\u73b0\u8fd9\u95e8\u8bed\u8a00\u7684\u5236\u5b9a\u8005\u662fECMA\uff0c\u4e0d\u662fNetscape\uff0c\u8fd9\u6837\u6709\u5229\u4e8e\u4fdd\u8bc1\u8fd9\u95e8\u8bed\u8a00\u7684\u5f00\u653e\u6027\u548c\u4e2d\u7acb\u6027\u3002<\/p>\n<p>\u56e0\u6b64\uff0cECMAScript\u548cJavaScript\u7684\u5173\u7cfb\u662f\uff0c\u524d\u8005\u662f\u540e\u8005\u7684\u89c4\u683c\uff0c\u540e\u8005\u662f\u524d\u8005\u7684\u4e00\u79cd\u5b9e\u73b0\uff08\u53e6\u5916\u7684ECMAScript\u65b9\u8a00\u8fd8\u6709Jscript\u548cActionScript\uff09\u3002\u65e5\u5e38\u573a\u5408\uff0c\u8fd9\u4e24\u4e2a\u8bcd\u662f\u53ef\u4ee5\u4e92\u6362\u7684\u3002<\/p>\n<h2 id=\"es6\u4e0eecmascript-2015\u7684\u5173\u7cfb\">ES6\u4e0eECMAScript 2015\u7684\u5173\u7cfb<\/h2>\n<p>\u5a92\u4f53\u91cc\u9762\u7ecf\u5e38\u53ef\u4ee5\u770b\u5230\u201dECMAScript 2015\u201c\u8fd9\u4e2a\u8bcd\uff0c\u5b83\u4e0eES6\u662f\u4ec0\u4e48\u5173\u7cfb\u5462\uff1f<\/p>\n<p>2011\u5e74\uff0cECMAScript 5.1\u7248\u53d1\u5e03\u540e\uff0c\u5c31\u5f00\u59cb\u5236\u5b9a6.0\u7248\u4e86\u3002\u56e0\u6b64\uff0c\u201dES6\u201d\u8fd9\u4e2a\u8bcd\u7684\u539f\u610f\uff0c\u5c31\u662f\u6307JavaScript\u8bed\u8a00\u7684\u4e0b\u4e00\u4e2a\u7248\u672c\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u7248\u672c\u5f15\u5165\u7684\u8bed\u6cd5\u529f\u80fd\u592a\u591a\uff0c\u800c\u4e14\u5236\u5b9a\u8fc7\u7a0b\u5f53\u4e2d\uff0c\u8fd8\u6709\u5f88\u591a\u7ec4\u7ec7\u548c\u4e2a\u4eba\u4e0d\u65ad\u63d0\u4ea4\u65b0\u529f\u80fd\u3002\u4e8b\u60c5\u5f88\u5feb\u5c31\u53d8\u5f97\u6e05\u695a\u4e86\uff0c\u4e0d\u53ef\u80fd\u5728\u4e00\u4e2a\u7248\u672c\u91cc\u9762\u5305\u62ec\u6240\u6709\u5c06\u8981\u5f15\u5165\u7684\u529f\u80fd\u3002\u5e38\u89c4\u7684\u505a\u6cd5\u662f\u5148\u53d1\u5e036.0\u7248\uff0c\u8fc7\u4e00\u6bb5\u65f6\u95f4\u518d\u53d16.1\u7248\uff0c\u7136\u540e\u662f6.2\u7248\u30016.3\u7248\u7b49\u7b49\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u6807\u51c6\u7684\u5236\u5b9a\u8005\u4e0d\u60f3\u8fd9\u6837\u505a\u3002\u4ed6\u4eec\u60f3\u8ba9\u6807\u51c6\u7684\u5347\u7ea7\u6210\u4e3a\u5e38\u89c4\u6d41\u7a0b\uff1a\u4efb\u4f55\u4eba\u5728\u4efb\u4f55\u65f6\u5019\uff0c\u90fd\u53ef\u4ee5\u5411\u6807\u51c6\u59d4\u5458\u4f1a\u63d0\u4ea4\u65b0\u8bed\u6cd5\u7684\u63d0\u6848\uff0c\u7136\u540e\u6807\u51c6\u59d4\u5458\u4f1a\u6bcf\u4e2a\u6708\u5f00\u4e00\u6b21\u4f1a\uff0c\u8bc4\u4f30\u8fd9\u4e9b\u63d0\u6848\u662f\u5426\u53ef\u4ee5\u63a5\u53d7\uff0c\u9700\u8981\u54ea\u4e9b\u6539\u8fdb\u3002\u5982\u679c\u7ecf\u8fc7\u591a\u6b21\u4f1a\u8bae\u4ee5\u540e\uff0c\u4e00\u4e2a\u63d0\u6848\u8db3\u591f\u6210\u719f\u4e86\uff0c\u5c31\u53ef\u4ee5\u6b63\u5f0f\u8fdb\u5165\u6807\u51c6\u4e86\u3002\u8fd9\u5c31\u662f\u8bf4\uff0c\u6807\u51c6\u7684\u7248\u672c\u5347\u7ea7\u6210\u4e3a\u4e86\u4e00\u4e2a\u4e0d\u65ad\u6eda\u52a8\u7684\u6d41\u7a0b\uff0c\u6bcf\u4e2a\u6708\u90fd\u4f1a\u6709\u53d8\u52a8\u3002<\/p>\n<p>\u6807\u51c6\u59d4\u5458\u4f1a\u6700\u7ec8\u51b3\u5b9a\uff0c\u6807\u51c6\u5728\u6bcf\u5e74\u76846\u6708\u4efd\u6b63\u5f0f\u53d1\u5e03\u4e00\u6b21\uff0c\u4f5c\u4e3a\u5f53\u5e74\u7684\u6b63\u5f0f\u7248\u672c\u3002\u63a5\u4e0b\u6765\u7684\u65f6\u95f4\uff0c\u5c31\u5728\u8fd9\u4e2a\u7248\u672c\u7684\u57fa\u7840\u4e0a\u505a\u6539\u52a8\uff0c\u76f4\u5230\u4e0b\u4e00\u5e74\u76846\u6708\u4efd\uff0c\u8349\u6848\u5c31\u81ea\u7136\u53d8\u6210\u4e86\u65b0\u4e00\u5e74\u7684\u7248\u672c\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u5c31\u4e0d\u9700\u8981\u4ee5\u524d\u7684\u7248\u672c\u53f7\u4e86\uff0c\u53ea\u8981\u7528\u5e74\u4efd\u6807\u8bb0\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n<p>ES6\u7684\u7b2c\u4e00\u4e2a\u7248\u672c\uff0c\u5c31\u8fd9\u6837\u57282015\u5e746\u6708\u53d1\u5e03\u4e86\uff0c\u6b63\u5f0f\u540d\u79f0\u5c31\u662f\u300aECMAScript 2015\u6807\u51c6\u300b\uff08\u7b80\u79f0ES2015\uff09\u30022016\u5e746\u6708\uff0c\u5c0f\u5e45\u4fee\u8ba2\u7684\u300aECMAScript 2016\u6807\u51c6\u300b\uff08\u7b80\u79f0ES2016\uff09\u5982\u671f\u53d1\u5e03\uff0c\u8fd9\u4e2a\u7248\u672c\u53ef\u4ee5\u770b\u4f5c\u662fES6.1\u7248\uff0c\u56e0\u4e3a\u4e24\u8005\u7684\u5dee\u5f02\u975e\u5e38\u5c0f\uff08\u53ea\u65b0\u589e\u4e86\u6570\u7ec4\u5b9e\u4f8b\u7684<code>includes<\/code>\u65b9\u6cd5\u548c\u6307\u6570\u8fd0\u7b97\u7b26\uff09\uff0c\u57fa\u672c\u4e0a\u662f\u540c\u4e00\u4e2a\u6807\u51c6\u3002\u6839\u636e\u8ba1\u5212\uff0c2017\u5e746\u6708\u5c06\u53d1\u5e03ES2017\u6807\u51c6\u3002<\/p>\n<p>\u56e0\u6b64\uff0cES6\u65e2\u662f\u4e00\u4e2a\u5386\u53f2\u540d\u8bcd\uff0c\u4e5f\u662f\u4e00\u4e2a\u6cdb\u6307\uff0c\u542b\u4e49\u662f5.1\u7248\u4ee5\u540e\u7684JavaScript\u7684\u4e0b\u4e00\u4ee3\u6807\u51c6\uff0c\u6db5\u76d6\u4e86ES2015\u3001ES2016\u3001ES2017\u7b49\u7b49\uff0c\u800cES2015\u5219\u662f\u6b63\u5f0f\u540d\u79f0\uff0c\u7279\u6307\u8be5\u5e74\u53d1\u5e03\u7684\u6b63\u5f0f\u7248\u672c\u7684\u8bed\u8a00\u6807\u51c6\u3002\u672c\u4e66\u4e2d\u63d0\u5230\u201cES6\u201d\u7684\u5730\u65b9\uff0c\u4e00\u822c\u662f\u6307ES2015\u6807\u51c6\uff0c\u4f46\u6709\u65f6\u4e5f\u662f\u6cdb\u6307\u201c\u4e0b\u4e00\u4ee3JavaScript\u8bed\u8a00\u201d\u3002<\/p>\n<h2 id=\"\u8bed\u6cd5\u63d0\u6848\u7684\u6279\u51c6\u6d41\u7a0b\">\u8bed\u6cd5\u63d0\u6848\u7684\u6279\u51c6\u6d41\u7a0b<\/h2>\n<p>\u4efb\u4f55\u4eba\u90fd\u53ef\u4ee5\u5411TC39\u6807\u51c6\u59d4\u5458\u4f1a\u63d0\u6848\u3002\u4e00\u79cd\u65b0\u7684\u8bed\u6cd5\u4ece\u63d0\u6848\u5230\u53d8\u6210\u6b63\u5f0f\u6807\u51c6\uff0c\u9700\u8981\u7ecf\u5386\u4e94\u4e2a\u9636\u6bb5\u3002\u6bcf\u4e2a\u9636\u6bb5\u7684\u53d8\u52a8\u90fd\u9700\u8981\u7531TC39\u59d4\u5458\u4f1a\u6279\u51c6\u3002<\/p>\n<ul>\n<li>Stage 0 &#8211; Strawman\uff08\u5c55\u793a\u9636\u6bb5\uff09<\/li>\n<li>Stage 1 &#8211; Proposal\uff08\u5f81\u6c42\u610f\u89c1\u9636\u6bb5\uff09<\/li>\n<li>Stage 2 &#8211; Draft\uff08\u8349\u6848\u9636\u6bb5\uff09<\/li>\n<li>Stage 3 &#8211; Candidate\uff08\u5019\u9009\u4eba\u9636\u6bb5\uff09<\/li>\n<li>Stage 4 &#8211; Finished\uff08\u5b9a\u6848\u9636\u6bb5\uff09<\/li>\n<\/ul>\n<p>\u4e00\u4e2a\u63d0\u6848\u53ea\u8981\u80fd\u8fdb\u5165Stage 2\uff0c\u5c31\u5dee\u4e0d\u591a\u7b49\u4e8e\u80af\u5b9a\u4f1a\u5305\u62ec\u5728\u4ee5\u540e\u7684\u6b63\u5f0f\u6807\u51c6\u91cc\u9762\u3002ECMAScript\u5f53\u524d\u7684\u6240\u6709\u63d0\u6848\uff0c\u53ef\u4ee5\u5728TC39\u7684\u5b98\u65b9\u7f51\u7ad9<a href=\"https:\/\/github.com\/tc39\/ecma262\" target=\"_blank\" rel=\"noopener\">Github.com\/tc39\/ecma262<\/a>\u67e5\u770b\u3002<\/p>\n<p>\u672c\u4e66\u7684\u5199\u4f5c\u76ee\u6807\u4e4b\u4e00\uff0c\u662f\u8ddf\u8e2aECMAScript\u8bed\u8a00\u7684\u6700\u65b0\u8fdb\u5c55\uff0c\u4ecb\u7ecd5.1\u7248\u672c\u4ee5\u540e\u6240\u6709\u7684\u65b0\u8bed\u6cd5\u3002\u5bf9\u4e8e\u90a3\u4e9b\u660e\u786e\u5c06\u8981\u5217\u5165\u6807\u51c6\u7684\u65b0\u8bed\u6cd5\uff0c\u5c24\u5176\u662f\u90a3\u4e9bBabel\u8f6c\u7801\u5668\uff08\u8be6\u89c1\u540e\u6587\uff09\u5df2\u7ecf\u652f\u6301\u7684\u529f\u80fd\uff0c\u4e5f\u5c06\u4e88\u4ee5\u4ecb\u7ecd\u3002<\/p>\n<h2 id=\"ecmascript\u7684\u5386\u53f2\">ECMAScript\u7684\u5386\u53f2<\/h2>\n<p>ES6\u4ece\u5f00\u59cb\u5236\u5b9a\u5230\u6700\u540e\u53d1\u5e03\uff0c\u6574\u6574\u7528\u4e8615\u5e74\u3002<\/p>\n<p>\u524d\u9762\u63d0\u5230\uff0cECMAScript 1.0\u662f1997\u5e74\u53d1\u5e03\u7684\uff0c\u63a5\u4e0b\u6765\u7684\u4e24\u5e74\uff0c\u8fde\u7eed\u53d1\u5e03\u4e86ECMAScript 2.0\uff081998\u5e746\u6708\uff09\u548cECMAScript 3.0\uff081999\u5e7412\u6708\uff09\u30023.0\u7248\u662f\u4e00\u4e2a\u5de8\u5927\u7684\u6210\u529f\uff0c\u5728\u4e1a\u754c\u5f97\u5230\u5e7f\u6cdb\u652f\u6301\uff0c\u6210\u4e3a\u901a\u884c\u6807\u51c6\uff0c\u5960\u5b9a\u4e86JavaScript\u8bed\u8a00\u7684\u57fa\u672c\u8bed\u6cd5\uff0c\u4ee5\u540e\u7684\u7248\u672c\u5b8c\u5168\u7ee7\u627f\u3002\u76f4\u5230\u4eca\u5929\uff0c\u521d\u5b66\u8005\u4e00\u5f00\u59cb\u5b66\u4e60JavaScript\uff0c\u5176\u5b9e\u5c31\u662f\u5728\u5b663.0\u7248\u7684\u8bed\u6cd5\u3002<\/p>\n<p>2000\u5e74\uff0cECMAScript 4.0\u5f00\u59cb\u915d\u917f\u3002\u8fd9\u4e2a\u7248\u672c\u6700\u540e\u6ca1\u6709\u901a\u8fc7\uff0c\u4f46\u662f\u5b83\u7684\u5927\u90e8\u5206\u5185\u5bb9\u88abES6\u7ee7\u627f\u4e86\u3002\u56e0\u6b64\uff0cES6\u5236\u5b9a\u7684\u8d77\u70b9\u5176\u5b9e\u662f2000\u5e74\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48ES4\u6ca1\u6709\u901a\u8fc7\u5462\uff1f\u56e0\u4e3a\u8fd9\u4e2a\u7248\u672c\u592a\u6fc0\u8fdb\u4e86\uff0c\u5bf9ES3\u505a\u4e86\u5f7b\u5e95\u5347\u7ea7\uff0c\u5bfc\u81f4\u6807\u51c6\u59d4\u5458\u4f1a\u7684\u4e00\u4e9b\u6210\u5458\u4e0d\u613f\u610f\u63a5\u53d7\u3002ECMA\u7684\u7b2c39\u53f7\u6280\u672f\u4e13\u5bb6\u59d4\u5458\u4f1a\uff08Technical Committee 39\uff0c\u7b80\u79f0TC39\uff09\u8d1f\u8d23\u5236\u8ba2ECMAScript\u6807\u51c6\uff0c\u6210\u5458\u5305\u62ecMicrosoft\u3001Mozilla\u3001Google\u7b49\u5927\u516c\u53f8\u3002<\/p>\n<p>2007\u5e7410\u6708\uff0cECMAScript 4.0\u7248\u8349\u6848\u53d1\u5e03\uff0c\u672c\u6765\u9884\u8ba1\u6b21\u5e748\u6708\u53d1\u5e03\u6b63\u5f0f\u7248\u672c\u3002\u4f46\u662f\uff0c\u5404\u65b9\u5bf9\u4e8e\u662f\u5426\u901a\u8fc7\u8fd9\u4e2a\u6807\u51c6\uff0c\u53d1\u751f\u4e86\u4e25\u91cd\u5206\u6b67\u3002\u4ee5Yahoo\u3001Microsoft\u3001Google\u4e3a\u9996\u7684\u5927\u516c\u53f8\uff0c\u53cd\u5bf9JavaScript\u7684\u5927\u5e45\u5347\u7ea7\uff0c\u4e3b\u5f20\u5c0f\u5e45\u6539\u52a8\uff1b\u4ee5JavaScript\u521b\u9020\u8005Brendan Eich\u4e3a\u9996\u7684Mozilla\u516c\u53f8\uff0c\u5219\u575a\u6301\u5f53\u524d\u7684\u8349\u6848\u3002<\/p>\n<p>2008\u5e747\u6708\uff0c\u7531\u4e8e\u5bf9\u4e8e\u4e0b\u4e00\u4e2a\u7248\u672c\u5e94\u8be5\u5305\u62ec\u54ea\u4e9b\u529f\u80fd\uff0c\u5404\u65b9\u5206\u6b67\u592a\u5927\uff0c\u4e89\u8bba\u8fc7\u4e8e\u6fc0\u70c8\uff0cECMA\u5f00\u4f1a\u51b3\u5b9a\uff0c\u4e2d\u6b62ECMAScript 4.0\u7684\u5f00\u53d1\uff0c\u5c06\u5176\u4e2d\u6d89\u53ca\u73b0\u6709\u529f\u80fd\u6539\u5584\u7684\u4e00\u5c0f\u90e8\u5206\uff0c\u53d1\u5e03\u4e3aECMAScript 3.1\uff0c\u800c\u5c06\u5176\u4ed6\u6fc0\u8fdb\u7684\u8bbe\u60f3\u6269\u5927\u8303\u56f4\uff0c\u653e\u5165\u4ee5\u540e\u7684\u7248\u672c\uff0c\u7531\u4e8e\u4f1a\u8bae\u7684\u6c14\u6c1b\uff0c\u8be5\u7248\u672c\u7684\u9879\u76ee\u4ee3\u53f7\u8d77\u540d\u4e3aHarmony\uff08\u548c\u8c10\uff09\u3002\u4f1a\u540e\u4e0d\u4e45\uff0cECMAScript 3.1\u5c31\u6539\u540d\u4e3aECMAScript 5\u3002<\/p>\n<p>2009\u5e7412\u6708\uff0cECMAScript 5.0\u7248\u6b63\u5f0f\u53d1\u5e03\u3002Harmony\u9879\u76ee\u5219\u4e00\u5206\u4e3a\u4e8c\uff0c\u4e00\u4e9b\u8f83\u4e3a\u53ef\u884c\u7684\u8bbe\u60f3\u5b9a\u540d\u4e3aJavaScript.next\u7ee7\u7eed\u5f00\u53d1\uff0c\u540e\u6765\u6f14\u53d8\u6210ECMAScript 6\uff1b\u4e00\u4e9b\u4e0d\u662f\u5f88\u6210\u719f\u7684\u8bbe\u60f3\uff0c\u5219\u88ab\u89c6\u4e3aJavaScript.next.next\uff0c\u5728\u66f4\u8fdc\u7684\u5c06\u6765\u518d\u8003\u8651\u63a8\u51fa\u3002TC39\u59d4\u5458\u4f1a\u7684\u603b\u4f53\u8003\u8651\u662f\uff0cES5\u4e0eES3\u57fa\u672c\u4fdd\u6301\u517c\u5bb9\uff0c\u8f83\u5927\u7684\u8bed\u6cd5\u4fee\u6b63\u548c\u65b0\u529f\u80fd\u52a0\u5165\uff0c\u5c06\u7531JavaScript.next\u5b8c\u6210\u3002\u5f53\u65f6\uff0cJavaScript.next\u6307\u7684\u662fES6\uff0c\u7b2c\u516d\u7248\u53d1\u5e03\u4ee5\u540e\uff0c\u5c31\u6307ES7\u3002TC39\u7684\u5224\u65ad\u662f\uff0cES5\u4f1a\u57282013\u5e74\u7684\u5e74\u4e2d\u6210\u4e3aJavaScript\u5f00\u53d1\u7684\u4e3b\u6d41\u6807\u51c6\uff0c\u5e76\u5728\u6b64\u540e\u4e94\u5e74\u4e2d\u4e00\u76f4\u4fdd\u6301\u8fd9\u4e2a\u4f4d\u7f6e\u3002<\/p>\n<p>2011\u5e746\u6708\uff0cECMAscript 5.1\u7248\u53d1\u5e03\uff0c\u5e76\u4e14\u6210\u4e3aISO\u56fd\u9645\u6807\u51c6\uff08ISO\/IEC 16262:2011\uff09\u3002<\/p>\n<p>2013\u5e743\u6708\uff0cECMAScript 6\u8349\u6848\u51bb\u7ed3\uff0c\u4e0d\u518d\u6dfb\u52a0\u65b0\u529f\u80fd\u3002\u65b0\u7684\u529f\u80fd\u8bbe\u60f3\u5c06\u88ab\u653e\u5230ECMAScript 7\u3002<\/p>\n<p>2013\u5e7412\u6708\uff0cECMAScript 6\u8349\u6848\u53d1\u5e03\u3002\u7136\u540e\u662f12\u4e2a\u6708\u7684\u8ba8\u8bba\u671f\uff0c\u542c\u53d6\u5404\u65b9\u53cd\u9988\u3002<\/p>\n<p>2015\u5e746\u6708\uff0cECMAScript 6\u6b63\u5f0f\u901a\u8fc7\uff0c\u6210\u4e3a\u56fd\u9645\u6807\u51c6\u3002\u4ece2000\u5e74\u7b97\u8d77\uff0c\u8fd9\u65f6\u5df2\u7ecf\u8fc7\u53bb\u4e8615\u5e74\u3002<\/p>\n<h2 id=\"\u90e8\u7f72\u8fdb\u5ea6\">\u90e8\u7f72\u8fdb\u5ea6<\/h2>\n<p>\u5404\u5927\u6d4f\u89c8\u5668\u7684\u6700\u65b0\u7248\u672c\uff0c\u5bf9ES6\u7684\u652f\u6301\u53ef\u4ee5\u67e5\u770b<a href=\"http:\/\/kangax.github.io\/es5-compat-table\/es6\/\" target=\"_blank\" rel=\"noopener\">kangax.github.io\/es5-compat-table\/es6\/<\/a>\u3002\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u652f\u6301\u5ea6\u5df2\u7ecf\u8d8a\u6765\u8d8a\u9ad8\u4e86\uff0cES6\u7684\u5927\u90e8\u5206\u7279\u6027\u90fd\u5b9e\u73b0\u4e86\u3002<\/p>\n<p>Node.js\u662fJavaScript\u8bed\u8a00\u7684\u670d\u52a1\u5668\u8fd0\u884c\u73af\u5883\uff0c\u5bf9ES6\u7684\u652f\u6301\u5ea6\u6bd4\u6d4f\u89c8\u5668\u66f4\u9ad8\u3002\u901a\u8fc7Node\uff0c\u53ef\u4ee5\u4f53\u9a8c\u66f4\u591aES6\u7684\u7279\u6027\u3002\u5efa\u8bae\u4f7f\u7528\u7248\u672c\u7ba1\u7406\u5de5\u5177<a href=\"https:\/\/github.com\/creationix\/nvm\" target=\"_blank\" rel=\"noopener\">nvm<\/a>\uff0c\u6765\u5b89\u88c5Node\uff0c\u56e0\u4e3a\u53ef\u4ee5\u81ea\u7531\u5207\u6362\u7248\u672c\u3002\u4e0d\u8fc7\uff0c<code>nvm<\/code>\u4e0d\u652f\u6301Windows\u7cfb\u7edf\uff0c\u5982\u679c\u4f60\u4f7f\u7528Windows\u7cfb\u7edf\uff0c\u4e0b\u9762\u7684\u64cd\u4f5c\u53ef\u4ee5\u6539\u7528<a href=\"https:\/\/github.com\/hakobera\/nvmw\" target=\"_blank\" rel=\"noopener\">nvmw<\/a>\u6216<a href=\"https:\/\/github.com\/coreybutler\/nvm-windows\" target=\"_blank\" rel=\"noopener\">nvm-windows<\/a>\u4ee3\u66ff\u3002<\/p>\n<p>\u5b89\u88c5nvm\u9700\u8981\u6253\u5f00\u547d\u4ee4\u884c\u7a97\u53e3\uff0c\u8fd0\u884c\u4e0b\u9762\u7684\u547d\u4ee4\u3002<\/p>\n<pre><code class=\"lang-bash\">$ curl -o- https:\/\/raw.githubusercontent.com\/creationix\/nvm\/&lt;version number&gt;\/install.sh | bash\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u547d\u4ee4\u7684<code>version number<\/code>\u5904\uff0c\u9700\u8981\u7528\u7248\u672c\u53f7\u66ff\u6362\u3002\u672c\u8282\u5199\u4f5c\u65f6\u7684\u7248\u672c\u53f7\u662f<code>v0.29.0<\/code>\u3002\u8be5\u547d\u4ee4\u8fd0\u884c\u540e\uff0c<code>nvm<\/code>\u4f1a\u9ed8\u8ba4\u5b89\u88c5\u5728\u7528\u6237\u4e3b\u76ee\u5f55\u7684<code>.nvm<\/code>\u5b50\u76ee\u5f55\u3002<\/p>\n<p>\u7136\u540e\uff0c\u6fc0\u6d3b<code>nvm<\/code>\u3002<\/p>\n<pre><code class=\"lang-bash\">$ <span class=\"hljs-built_in\">source<\/span> ~\/.nvm\/nvm.sh\r\n<\/code><\/pre>\n<p>\u6fc0\u6d3b\u4ee5\u540e\uff0c\u5b89\u88c5Node\u7684\u6700\u65b0\u7248\u3002<\/p>\n<pre><code class=\"lang-bash\">$ nvm install node\r\n<\/code><\/pre>\n<p>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u5207\u6362\u5230\u8be5\u7248\u672c\u3002<\/p>\n<pre><code class=\"lang-bash\">$ nvm use node\r\n<\/code><\/pre>\n<p>\u4f7f\u7528\u4e0b\u9762\u7684\u547d\u4ee4\uff0c\u53ef\u4ee5\u67e5\u770bNode\u6240\u6709\u5df2\u7ecf\u5b9e\u73b0\u7684ES6\u7279\u6027\u3002<\/p>\n<pre><code class=\"lang-bash\">$ node --v8-options | grep harmony\r\n\r\n  --harmony_typeof\r\n  --harmony_scoping\r\n  --harmony_modules\r\n  --harmony_symbols\r\n  --harmony_proxies\r\n  --harmony_collections\r\n  --harmony_observation\r\n  --harmony_generators\r\n  --harmony_iteration\r\n  --harmony_numeric_literals\r\n  --harmony_strings\r\n  --harmony_arrays\r\n  --harmony_maths\r\n  --harmony\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u547d\u4ee4\u7684\u8f93\u51fa\u7ed3\u679c\uff0c\u4f1a\u56e0\u4e3a\u7248\u672c\u7684\u4e0d\u540c\u800c\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<p>\u6211\u5199\u4e86\u4e00\u4e2a<a href=\"https:\/\/github.com\/ruanyf\/es-checker\" target=\"_blank\" rel=\"noopener\">ES-Checker<\/a>\u6a21\u5757\uff0c\u7528\u6765\u68c0\u67e5\u5404\u79cd\u8fd0\u884c\u73af\u5883\u5bf9ES6\u7684\u652f\u6301\u60c5\u51b5\u3002\u8bbf\u95ee<a href=\"http:\/\/ruanyf.github.io\/es-checker\" target=\"_blank\" rel=\"noopener\">ruanyf.github.io\/es-checker<\/a>\uff0c\u53ef\u4ee5\u770b\u5230\u60a8\u7684\u6d4f\u89c8\u5668\u652f\u6301ES6\u7684\u7a0b\u5ea6\u3002\u8fd0\u884c\u4e0b\u9762\u7684\u547d\u4ee4\uff0c\u53ef\u4ee5\u67e5\u770b\u4f60\u6b63\u5728\u4f7f\u7528\u7684Node\u73af\u5883\u5bf9ES6\u7684\u652f\u6301\u7a0b\u5ea6\u3002<\/p>\n<pre><code class=\"lang-bash\">$ npm install -g es-checker\r\n$ es-checker\r\n\r\n=========================================\r\nPasses 24 feature Dectations\r\nYour runtime supports 57% of ECMAScript 6\r\n=========================================\r\n<\/code><\/pre>\n<h2 id=\"babel\u8f6c\u7801\u5668\">Babel\u8f6c\u7801\u5668<\/h2>\n<p><a href=\"https:\/\/babeljs.io\/\" target=\"_blank\" rel=\"noopener\">Babel<\/a>\u662f\u4e00\u4e2a\u5e7f\u6cdb\u4f7f\u7528\u7684ES6\u8f6c\u7801\u5668\uff0c\u53ef\u4ee5\u5c06ES6\u4ee3\u7801\u8f6c\u4e3aES5\u4ee3\u7801\uff0c\u4ece\u800c\u5728\u73b0\u6709\u73af\u5883\u6267\u884c\u3002\u8fd9\u610f\u5473\u7740\uff0c\u4f60\u53ef\u4ee5\u7528ES6\u7684\u65b9\u5f0f\u7f16\u5199\u7a0b\u5e8f\uff0c\u53c8\u4e0d\u7528\u62c5\u5fc3\u73b0\u6709\u73af\u5883\u662f\u5426\u652f\u6301\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\u3002<\/p>\n<pre><code class=\"lang-javascript\"><span class=\"hljs-comment\">\/\/ \u8f6c\u7801\u524d<\/span>\r\ninput.map(item =&gt; item + <span class=\"hljs-number\">1<\/span>);\r\n\r\n<span class=\"hljs-comment\">\/\/ \u8f6c\u7801\u540e<\/span>\r\ninput.map(<span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> (<span class=\"hljs-params\">item<\/span>) <\/span>{\r\n  <span class=\"hljs-keyword\">return<\/span> item + <span class=\"hljs-number\">1<\/span>;\r\n});\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u7684\u539f\u59cb\u4ee3\u7801\u7528\u4e86\u7bad\u5934\u51fd\u6570\uff0c\u8fd9\u4e2a\u7279\u6027\u8fd8\u6ca1\u6709\u5f97\u5230\u5e7f\u6cdb\u652f\u6301\uff0cBabel\u5c06\u5176\u8f6c\u4e3a\u666e\u901a\u51fd\u6570\uff0c\u5c31\u80fd\u5728\u73b0\u6709\u7684JavaScript\u73af\u5883\u6267\u884c\u4e86\u3002<\/p>\n<h3 id=\"\u914d\u7f6e\u6587\u4ef6babelrc\">\u914d\u7f6e\u6587\u4ef6<code>.babelrc<\/code><\/h3>\n<p>Babel\u7684\u914d\u7f6e\u6587\u4ef6\u662f<code>.babelrc<\/code>\uff0c\u5b58\u653e\u5728\u9879\u76ee\u7684\u6839\u76ee\u5f55\u4e0b\u3002\u4f7f\u7528Babel\u7684\u7b2c\u4e00\u6b65\uff0c\u5c31\u662f\u914d\u7f6e\u8fd9\u4e2a\u6587\u4ef6\u3002<\/p>\n<p>\u8be5\u6587\u4ef6\u7528\u6765\u8bbe\u7f6e\u8f6c\u7801\u89c4\u5219\u548c\u63d2\u4ef6\uff0c\u57fa\u672c\u683c\u5f0f\u5982\u4e0b\u3002<\/p>\n<pre><code class=\"lang-javascript\">{\r\n  <span class=\"hljs-string\">\"presets\"<\/span>: [],\r\n  <span class=\"hljs-string\">\"plugins\"<\/span>: []\r\n}\r\n<\/code><\/pre>\n<p><code>presets<\/code>\u5b57\u6bb5\u8bbe\u5b9a\u8f6c\u7801\u89c4\u5219\uff0c\u5b98\u65b9\u63d0\u4f9b\u4ee5\u4e0b\u7684\u89c4\u5219\u96c6\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u9700\u8981\u5b89\u88c5\u3002<\/p>\n<pre><code class=\"lang-bash\"><span class=\"hljs-comment\"># ES2015\u8f6c\u7801\u89c4\u5219<\/span>\r\n$ npm install --save-dev babel-preset-es2015\r\n\r\n<span class=\"hljs-comment\"># react\u8f6c\u7801\u89c4\u5219<\/span>\r\n$ npm install --save-dev babel-preset-react\r\n\r\n<span class=\"hljs-comment\"># ES7\u4e0d\u540c\u9636\u6bb5\u8bed\u6cd5\u63d0\u6848\u7684\u8f6c\u7801\u89c4\u5219\uff08\u5171\u67094\u4e2a\u9636\u6bb5\uff09\uff0c\u9009\u88c5\u4e00\u4e2a<\/span>\r\n$ npm install --save-dev babel-preset-stage-0\r\n$ npm install --save-dev babel-preset-stage-1\r\n$ npm install --save-dev babel-preset-stage-2\r\n$ npm install --save-dev babel-preset-stage-3\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5c06\u8fd9\u4e9b\u89c4\u5219\u52a0\u5165<code>.babelrc<\/code>\u3002<\/p>\n<pre><code class=\"lang-javascript\">  {\r\n    <span class=\"hljs-string\">\"presets\"<\/span>: [\r\n      <span class=\"hljs-string\">\"es2015\"<\/span>,\r\n      <span class=\"hljs-string\">\"react\"<\/span>,\r\n      <span class=\"hljs-string\">\"stage-2\"<\/span>\r\n    ],\r\n    <span class=\"hljs-string\">\"plugins\"<\/span>: []\r\n  }\r\n<\/code><\/pre>\n<p>\u6ce8\u610f\uff0c\u4ee5\u4e0b\u6240\u6709Babel\u5de5\u5177\u548c\u6a21\u5757\u7684\u4f7f\u7528\uff0c\u90fd\u5fc5\u987b\u5148\u5199\u597d<code>.babelrc<\/code>\u3002<\/p>\n<h3 id=\"\u547d\u4ee4\u884c\u8f6c\u7801babel-cli\">\u547d\u4ee4\u884c\u8f6c\u7801<code>babel-cli<\/code><\/h3>\n<p>Babel\u63d0\u4f9b<code>babel-cli<\/code>\u5de5\u5177\uff0c\u7528\u4e8e\u547d\u4ee4\u884c\u8f6c\u7801\u3002<\/p>\n<p>\u5b83\u7684\u5b89\u88c5\u547d\u4ee4\u5982\u4e0b\u3002<\/p>\n<pre><code class=\"lang-bash\">$ npm install --global babel-cli\r\n<\/code><\/pre>\n<p>\u57fa\u672c\u7528\u6cd5\u5982\u4e0b\u3002<\/p>\n<pre><code class=\"lang-bash\"><span class=\"hljs-comment\"># \u8f6c\u7801\u7ed3\u679c\u8f93\u51fa\u5230\u6807\u51c6\u8f93\u51fa<\/span>\r\n$ babel example.js\r\n\r\n<span class=\"hljs-comment\"># \u8f6c\u7801\u7ed3\u679c\u5199\u5165\u4e00\u4e2a\u6587\u4ef6<\/span>\r\n<span class=\"hljs-comment\"># --out-file \u6216 -o \u53c2\u6570\u6307\u5b9a\u8f93\u51fa\u6587\u4ef6<\/span>\r\n$ babel example.js --out-file compiled.js\r\n<span class=\"hljs-comment\"># \u6216\u8005<\/span>\r\n$ babel example.js -o compiled.js\r\n\r\n<span class=\"hljs-comment\"># \u6574\u4e2a\u76ee\u5f55\u8f6c\u7801<\/span>\r\n<span class=\"hljs-comment\"># --out-dir \u6216 -d \u53c2\u6570\u6307\u5b9a\u8f93\u51fa\u76ee\u5f55<\/span>\r\n$ babel src --out-dir lib\r\n<span class=\"hljs-comment\"># \u6216\u8005<\/span>\r\n$ babel src <span class=\"hljs-_\">-d<\/span> lib\r\n\r\n<span class=\"hljs-comment\"># -s \u53c2\u6570\u751f\u6210source map\u6587\u4ef6<\/span>\r\n$ babel src <span class=\"hljs-_\">-d<\/span> lib <span class=\"hljs-_\">-s<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u4ee3\u7801\u662f\u5728\u5168\u5c40\u73af\u5883\u4e0b\uff0c\u8fdb\u884cBabel\u8f6c\u7801\u3002\u8fd9\u610f\u5473\u7740\uff0c\u5982\u679c\u9879\u76ee\u8981\u8fd0\u884c\uff0c\u5168\u5c40\u73af\u5883\u5fc5\u987b\u6709Babel\uff0c\u4e5f\u5c31\u662f\u8bf4\u9879\u76ee\u4ea7\u751f\u4e86\u5bf9\u73af\u5883\u7684\u4f9d\u8d56\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u8fd9\u6837\u505a\u4e5f\u65e0\u6cd5\u652f\u6301\u4e0d\u540c\u9879\u76ee\u4f7f\u7528\u4e0d\u540c\u7248\u672c\u7684Babel\u3002<\/p>\n<p>\u4e00\u4e2a\u89e3\u51b3\u529e\u6cd5\u662f\u5c06<code>babel-cli<\/code>\u5b89\u88c5\u5728\u9879\u76ee\u4e4b\u4e2d\u3002<\/p>\n<pre><code class=\"lang-bash\"><span class=\"hljs-comment\"># \u5b89\u88c5<\/span>\r\n$ npm install --save-dev babel-cli\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u6539\u5199<code>package.json<\/code>\u3002<\/p>\n<pre><code class=\"lang-javascript\">{\r\n  <span class=\"hljs-comment\">\/\/ ...<\/span>\r\n  <span class=\"hljs-string\">\"devDependencies\"<\/span>: {\r\n    <span class=\"hljs-string\">\"babel-cli\"<\/span>: <span class=\"hljs-string\">\"^6.0.0\"<\/span>\r\n  },\r\n  <span class=\"hljs-string\">\"scripts\"<\/span>: {\r\n    <span class=\"hljs-string\">\"build\"<\/span>: <span class=\"hljs-string\">\"babel src -d lib\"<\/span>\r\n  },\r\n}\r\n<\/code><\/pre>\n<p>\u8f6c\u7801\u7684\u65f6\u5019\uff0c\u5c31\u6267\u884c\u4e0b\u9762\u7684\u547d\u4ee4\u3002<\/p>\n<pre><code class=\"lang-javascript\">$ npm run build\r\n<\/code><\/pre>\n<h3 id=\"babel-node\">babel-node<\/h3>\n<p><code>babel-cli<\/code>\u5de5\u5177\u81ea\u5e26\u4e00\u4e2a<code>babel-node<\/code>\u547d\u4ee4\uff0c\u63d0\u4f9b\u4e00\u4e2a\u652f\u6301ES6\u7684REPL\u73af\u5883\u3002\u5b83\u652f\u6301Node\u7684REPL\u73af\u5883\u7684\u6240\u6709\u529f\u80fd\uff0c\u800c\u4e14\u53ef\u4ee5\u76f4\u63a5\u8fd0\u884cES6\u4ee3\u7801\u3002<\/p>\n<p>\u5b83\u4e0d\u7528\u5355\u72ec\u5b89\u88c5\uff0c\u800c\u662f\u968f<code>babel-cli<\/code>\u4e00\u8d77\u5b89\u88c5\u3002\u7136\u540e\uff0c\u6267\u884c<code>babel-node<\/code>\u5c31\u8fdb\u5165REPL\u73af\u5883\u3002<\/p>\n<pre><code class=\"lang-bash\">$ babel-node\r\n&gt; (x =&gt; x * 2)(1)\r\n2\r\n<\/code><\/pre>\n<p><code>babel-node<\/code>\u547d\u4ee4\u53ef\u4ee5\u76f4\u63a5\u8fd0\u884cES6\u811a\u672c\u3002\u5c06\u4e0a\u9762\u7684\u4ee3\u7801\u653e\u5165\u811a\u672c\u6587\u4ef6<code>es6.js<\/code>\uff0c\u7136\u540e\u76f4\u63a5\u8fd0\u884c\u3002<\/p>\n<pre><code class=\"lang-bash\">$ babel-node es6.js\r\n2\r\n<\/code><\/pre>\n<p><code>babel-node<\/code>\u4e5f\u53ef\u4ee5\u5b89\u88c5\u5728\u9879\u76ee\u4e2d\u3002<\/p>\n<pre><code class=\"lang-bash\">$ npm install --save-dev babel-cli\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u6539\u5199<code>package.json<\/code>\u3002<\/p>\n<pre><code class=\"lang-javascript\">{\r\n  <span class=\"hljs-string\">\"scripts\"<\/span>: {\r\n    <span class=\"hljs-string\">\"script-name\"<\/span>: <span class=\"hljs-string\">\"babel-node script.js\"<\/span>\r\n  }\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528<code>babel-node<\/code>\u66ff\u4ee3<code>node<\/code>\uff0c\u8fd9\u6837<code>script.js<\/code>\u672c\u8eab\u5c31\u4e0d\u7528\u505a\u4efb\u4f55\u8f6c\u7801\u5904\u7406\u3002<\/p>\n<h3 id=\"babel-register\">babel-register<\/h3>\n<p><code>babel-register<\/code>\u6a21\u5757\u6539\u5199<code>require<\/code>\u547d\u4ee4\uff0c\u4e3a\u5b83\u52a0\u4e0a\u4e00\u4e2a\u94a9\u5b50\u3002\u6b64\u540e\uff0c\u6bcf\u5f53\u4f7f\u7528<code>require<\/code>\u52a0\u8f7d<code>.js<\/code>\u3001<code>.jsx<\/code>\u3001<code>.es<\/code>\u548c<code>.es6<\/code>\u540e\u7f00\u540d\u7684\u6587\u4ef6\uff0c\u5c31\u4f1a\u5148\u7528Babel\u8fdb\u884c\u8f6c\u7801\u3002<\/p>\n<pre><code class=\"lang-bash\">$ npm install --save-dev babel-register\r\n<\/code><\/pre>\n<p>\u4f7f\u7528\u65f6\uff0c\u5fc5\u987b\u9996\u5148\u52a0\u8f7d<code>babel-register<\/code>\u3002<\/p>\n<pre><code class=\"lang-bash\">require(<span class=\"hljs-string\">\"babel-register\"<\/span>);\r\nrequire(<span class=\"hljs-string\">\".\/index.js\"<\/span>);\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5c31\u4e0d\u9700\u8981\u624b\u52a8\u5bf9<code>index.js<\/code>\u8f6c\u7801\u4e86\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<code>babel-register<\/code>\u53ea\u4f1a\u5bf9<code>require<\/code>\u547d\u4ee4\u52a0\u8f7d\u7684\u6587\u4ef6\u8f6c\u7801\uff0c\u800c\u4e0d\u4f1a\u5bf9\u5f53\u524d\u6587\u4ef6\u8f6c\u7801\u3002\u53e6\u5916\uff0c\u7531\u4e8e\u5b83\u662f\u5b9e\u65f6\u8f6c\u7801\uff0c\u6240\u4ee5\u53ea\u9002\u5408\u5728\u5f00\u53d1\u73af\u5883\u4f7f\u7528\u3002<\/p>\n<h3 id=\"babel-core\">babel-core<\/h3>\n<p>\u5982\u679c\u67d0\u4e9b\u4ee3\u7801\u9700\u8981\u8c03\u7528Babel\u7684API\u8fdb\u884c\u8f6c\u7801\uff0c\u5c31\u8981\u4f7f\u7528<code>babel-core<\/code>\u6a21\u5757\u3002<\/p>\n<p>\u5b89\u88c5\u547d\u4ee4\u5982\u4e0b\u3002<\/p>\n<pre><code class=\"lang-bash\">$ npm install babel-core --save\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5728\u9879\u76ee\u4e2d\u5c31\u53ef\u4ee5\u8c03\u7528<code>babel-core<\/code>\u3002<\/p>\n<pre><code class=\"lang-javascript\"><span class=\"hljs-keyword\">var<\/span> babel = <span class=\"hljs-built_in\">require<\/span>(<span class=\"hljs-string\">'babel-core'<\/span>);\r\n\r\n<span class=\"hljs-comment\">\/\/ \u5b57\u7b26\u4e32\u8f6c\u7801<\/span>\r\nbabel.transform(<span class=\"hljs-string\">'code();'<\/span>, options);\r\n<span class=\"hljs-comment\">\/\/ =&gt; { code, map, ast }<\/span>\r\n\r\n<span class=\"hljs-comment\">\/\/ \u6587\u4ef6\u8f6c\u7801\uff08\u5f02\u6b65\uff09<\/span>\r\nbabel.transformFile(<span class=\"hljs-string\">'filename.js'<\/span>, options, <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">err, result<\/span>) <\/span>{\r\n  result; <span class=\"hljs-comment\">\/\/ =&gt; { code, map, ast }<\/span>\r\n});\r\n\r\n<span class=\"hljs-comment\">\/\/ \u6587\u4ef6\u8f6c\u7801\uff08\u540c\u6b65\uff09<\/span>\r\nbabel.transformFileSync(<span class=\"hljs-string\">'filename.js'<\/span>, options);\r\n<span class=\"hljs-comment\">\/\/ =&gt; { code, map, ast }<\/span>\r\n\r\n<span class=\"hljs-comment\">\/\/ Babel AST\u8f6c\u7801<\/span>\r\nbabel.transformFromAst(ast, code, options);\r\n<span class=\"hljs-comment\">\/\/ =&gt; { code, map, ast }<\/span>\r\n<\/code><\/pre>\n<p>\u914d\u7f6e\u5bf9\u8c61<code>options<\/code>\uff0c\u53ef\u4ee5\u53c2\u770b\u5b98\u65b9\u6587\u6863<a href=\"http:\/\/babeljs.io\/docs\/usage\/options\/\" target=\"_blank\" rel=\"noopener\">http:\/\/babeljs.io\/docs\/usage\/options\/<\/a>\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\u3002<\/p>\n<pre><code class=\"lang-javascript\"><span class=\"hljs-keyword\">var<\/span> es6Code = <span class=\"hljs-string\">'let x = n =&gt; n + 1'<\/span>;\r\n<span class=\"hljs-keyword\">var<\/span> es5Code = <span class=\"hljs-built_in\">require<\/span>(<span class=\"hljs-string\">'babel-core'<\/span>)\r\n  .transform(es6Code, {\r\n    presets: [<span class=\"hljs-string\">'es2015'<\/span>]\r\n  })\r\n  .code;\r\n<span class=\"hljs-comment\">\/\/ '\"use strict\";\\n\\nvar x = function x(n) {\\n  return n + 1;\\n};'<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u4ee3\u7801\u4e2d\uff0c<code>transform<\/code>\u65b9\u6cd5\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u8868\u793a\u9700\u8981\u88ab\u8f6c\u6362\u7684ES6\u4ee3\u7801\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u8f6c\u6362\u7684\u914d\u7f6e\u5bf9\u8c61\u3002<\/p>\n<h3 id=\"babel-polyfill\">babel-polyfill<\/h3>\n<p>Babel\u9ed8\u8ba4\u53ea\u8f6c\u6362\u65b0\u7684JavaScript\u53e5\u6cd5\uff08syntax\uff09\uff0c\u800c\u4e0d\u8f6c\u6362\u65b0\u7684API\uff0c\u6bd4\u5982Iterator\u3001Generator\u3001Set\u3001Maps\u3001Proxy\u3001Reflect\u3001Symbol\u3001Promise\u7b49\u5168\u5c40\u5bf9\u8c61\uff0c\u4ee5\u53ca\u4e00\u4e9b\u5b9a\u4e49\u5728\u5168\u5c40\u5bf9\u8c61\u4e0a\u7684\u65b9\u6cd5\uff08\u6bd4\u5982<code>Object.assign<\/code>\uff09\u90fd\u4e0d\u4f1a\u8f6c\u7801\u3002<\/p>\n<p>\u4e3e\u4f8b\u6765\u8bf4\uff0cES6\u5728<code>Array<\/code>\u5bf9\u8c61\u4e0a\u65b0\u589e\u4e86<code>Array.from<\/code>\u65b9\u6cd5\u3002Babel\u5c31\u4e0d\u4f1a\u8f6c\u7801\u8fd9\u4e2a\u65b9\u6cd5\u3002\u5982\u679c\u60f3\u8ba9\u8fd9\u4e2a\u65b9\u6cd5\u8fd0\u884c\uff0c\u5fc5\u987b\u4f7f\u7528<code>babel-polyfill<\/code>\uff0c\u4e3a\u5f53\u524d\u73af\u5883\u63d0\u4f9b\u4e00\u4e2a\u57ab\u7247\u3002<\/p>\n<p>\u5b89\u88c5\u547d\u4ee4\u5982\u4e0b\u3002<\/p>\n<pre><code class=\"lang-bash\">$ npm install --save babel-polyfill\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5728\u811a\u672c\u5934\u90e8\uff0c\u52a0\u5165\u5982\u4e0b\u4e00\u884c\u4ee3\u7801\u3002<\/p>\n<pre><code class=\"lang-javascript\"><span class=\"hljs-keyword\">import<\/span> <span class=\"hljs-string\">'babel-polyfill'<\/span>;\r\n<span class=\"hljs-comment\">\/\/ \u6216\u8005<\/span>\r\n<span class=\"hljs-built_in\">require<\/span>(<span class=\"hljs-string\">'babel-polyfill'<\/span>);\r\n<\/code><\/pre>\n<p>Babel\u9ed8\u8ba4\u4e0d\u8f6c\u7801\u7684API\u975e\u5e38\u591a\uff0c\u8be6\u7ec6\u6e05\u5355\u53ef\u4ee5\u67e5\u770b<code>babel-plugin-transform-runtime<\/code>\u6a21\u5757\u7684<a href=\"https:\/\/github.com\/babel\/babel\/blob\/master\/packages\/babel-plugin-transform-runtime\/src\/definitions.js\" target=\"_blank\" rel=\"noopener\">definitions.js<\/a>\u6587\u4ef6\u3002<\/p>\n<h3 id=\"\u6d4f\u89c8\u5668\u73af\u5883\">\u6d4f\u89c8\u5668\u73af\u5883<\/h3>\n<p>Babel\u4e5f\u53ef\u4ee5\u7528\u4e8e\u6d4f\u89c8\u5668\u73af\u5883\u3002\u4f46\u662f\uff0c\u4eceBabel 6.0\u5f00\u59cb\uff0c\u4e0d\u518d\u76f4\u63a5\u63d0\u4f9b\u6d4f\u89c8\u5668\u7248\u672c\uff0c\u800c\u662f\u8981\u7528\u6784\u5efa\u5de5\u5177\u6784\u5efa\u51fa\u6765\u3002\u5982\u679c\u4f60\u6ca1\u6709\u6216\u4e0d\u60f3\u4f7f\u7528\u6784\u5efa\u5de5\u5177\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b89\u88c55.x\u7248\u672c\u7684<code>babel-core<\/code>\u6a21\u5757\u83b7\u53d6\u3002<\/p>\n<pre><code class=\"lang-bash\">$ npm install babel-core@5\r\n<\/code><\/pre>\n<p>\u8fd0\u884c\u4e0a\u9762\u7684\u547d\u4ee4\u4ee5\u540e\uff0c\u5c31\u53ef\u4ee5\u5728\u5f53\u524d\u76ee\u5f55\u7684<code>node_modules\/babel-core\/<\/code>\u5b50\u76ee\u5f55\u91cc\u9762\uff0c\u627e\u5230<code>babel<\/code>\u7684\u6d4f\u89c8\u5668\u7248\u672c<code>browser.js<\/code>\uff08\u672a\u7cbe\u7b80\uff09\u548c<code>browser.min.js<\/code>\uff08\u5df2\u7cbe\u7b80\uff09\u3002<\/p>\n<p>\u7136\u540e\uff0c\u5c06\u4e0b\u9762\u7684\u4ee3\u7801\u63d2\u5165\u7f51\u9875\u3002<\/p>\n<pre><code class=\"lang-html\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span> <span class=\"hljs-attr\">src<\/span>=<span class=\"hljs-string\">\"node_modules\/babel-core\/browser.js\"<\/span>&gt;<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span> <span class=\"hljs-attr\">type<\/span>=<span class=\"hljs-string\">\"text\/babel\"<\/span>&gt;<\/span><span class=\"actionscript\">\r\n<span class=\"hljs-comment\">\/\/ Your ES6 code<\/span>\r\n<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u4ee3\u7801\u4e2d\uff0c<code>browser.js<\/code>\u662fBabel\u63d0\u4f9b\u7684\u8f6c\u6362\u5668\u811a\u672c\uff0c\u53ef\u4ee5\u5728\u6d4f\u89c8\u5668\u8fd0\u884c\u3002\u7528\u6237\u7684ES6\u811a\u672c\u653e\u5728<code>script<\/code>\u6807\u7b7e\u4e4b\u4e2d\uff0c\u4f46\u662f\u8981\u6ce8\u660e<code>type=\"text\/babel\"<\/code>\u3002<\/p>\n<p>\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528<a href=\"https:\/\/github.com\/Daniel15\/babel-standalone\" target=\"_blank\" rel=\"noopener\">babel-standalone<\/a>\u6a21\u5757\u63d0\u4f9b\u7684\u6d4f\u89c8\u5668\u7248\u672c\uff0c\u5c06\u5176\u63d2\u5165\u7f51\u9875\u3002<\/p>\n<pre><code class=\"lang-html\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span> <span class=\"hljs-attr\">src<\/span>=<span class=\"hljs-string\">\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/babel-standalone\/6.4.4\/babel.min.js\"<\/span>&gt;<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span> <span class=\"hljs-attr\">type<\/span>=<span class=\"hljs-string\">\"text\/babel\"<\/span>&gt;<\/span><span class=\"actionscript\">\r\n<span class=\"hljs-comment\">\/\/ Your ES6 code<\/span>\r\n<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u6ce8\u610f\uff0c\u7f51\u9875\u4e2d\u5b9e\u65f6\u5c06ES6\u4ee3\u7801\u8f6c\u4e3aES5\uff0c\u5bf9\u6027\u80fd\u4f1a\u6709\u5f71\u54cd\u3002\u751f\u4ea7\u73af\u5883\u9700\u8981\u52a0\u8f7d\u5df2\u7ecf\u8f6c\u7801\u5b8c\u6210\u7684\u811a\u672c\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u5982\u4f55\u5c06\u4ee3\u7801\u6253\u5305\u6210\u6d4f\u89c8\u5668\u53ef\u4ee5\u4f7f\u7528\u7684\u811a\u672c\uff0c\u4ee5<code>Babel<\/code>\u914d\u5408<code>Browserify<\/code>\u4e3a\u4f8b\u3002\u9996\u5148\uff0c\u5b89\u88c5<code>babelify<\/code>\u6a21\u5757\u3002<\/p>\n<pre><code class=\"lang-bash\">$ npm install --save-dev babelify babel-preset-es2015\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u518d\u7528\u547d\u4ee4\u884c\u8f6c\u6362ES6\u811a\u672c\u3002<\/p>\n<pre><code class=\"lang-bash\">$  browserify script.js -o bundle.js \\\r\n  -t [ babelify --presets [ es2015 ] ]\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u4ee3\u7801\u5c06ES6\u811a\u672c<code>script.js<\/code>\uff0c\u8f6c\u4e3a<code>bundle.js<\/code>\uff0c\u6d4f\u89c8\u5668\u76f4\u63a5\u52a0\u8f7d\u540e\u8005\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n<p>\u5728<code>package.json<\/code>\u8bbe\u7f6e\u4e0b\u9762\u7684\u4ee3\u7801\uff0c\u5c31\u4e0d\u7528\u6bcf\u6b21\u547d\u4ee4\u884c\u90fd\u8f93\u5165\u53c2\u6570\u4e86\u3002<\/p>\n<pre><code class=\"lang-javascript\">{\r\n  <span class=\"hljs-string\">\"browserify\"<\/span>: {\r\n    <span class=\"hljs-string\">\"transform\"<\/span>: [[<span class=\"hljs-string\">\"babelify\"<\/span>, { <span class=\"hljs-string\">\"presets\"<\/span>: [<span class=\"hljs-string\">\"es2015\"<\/span>] }]]\r\n  }\r\n}\r\n<\/code><\/pre>\n<h3 id=\"\u5728\u7ebf\u8f6c\u6362\">\u5728\u7ebf\u8f6c\u6362<\/h3>\n<p>Babel\u63d0\u4f9b\u4e00\u4e2a<a href=\"https:\/\/babeljs.io\/repl\/\" target=\"_blank\" rel=\"noopener\">REPL\u5728\u7ebf\u7f16\u8bd1\u5668<\/a>\uff0c\u53ef\u4ee5\u5728\u7ebf\u5c06ES6\u4ee3\u7801\u8f6c\u4e3aES5\u4ee3\u7801\u3002\u8f6c\u6362\u540e\u7684\u4ee3\u7801\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f5c\u4e3aES5\u4ee3\u7801\u63d2\u5165\u7f51\u9875\u8fd0\u884c\u3002<\/p>\n<h3 id=\"\u4e0e\u5176\u4ed6\u5de5\u5177\u7684\u914d\u5408\">\u4e0e\u5176\u4ed6\u5de5\u5177\u7684\u914d\u5408<\/h3>\n<p>\u8bb8\u591a\u5de5\u5177\u9700\u8981Babel\u8fdb\u884c\u524d\u7f6e\u8f6c\u7801\uff0c\u8fd9\u91cc\u4e3e\u4e24\u4e2a\u4f8b\u5b50\uff1aESLint\u548cMocha\u3002<\/p>\n<p>ESLint\u7528\u4e8e\u9759\u6001\u68c0\u67e5\u4ee3\u7801\u7684\u8bed\u6cd5\u548c\u98ce\u683c\uff0c\u5b89\u88c5\u547d\u4ee4\u5982\u4e0b\u3002<\/p>\n<pre><code class=\"lang-bash\">$ npm install --save-dev eslint babel-eslint\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5728\u9879\u76ee\u6839\u76ee\u5f55\u4e0b\uff0c\u65b0\u5efa\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6<code>.eslintrc<\/code>\uff0c\u5728\u5176\u4e2d\u52a0\u5165<code>parser<\/code>\u5b57\u6bb5\u3002<\/p>\n<pre><code class=\"lang-javascript\">{\r\n  <span class=\"hljs-string\">\"parser\"<\/span>: <span class=\"hljs-string\">\"babel-eslint\"<\/span>,\r\n  <span class=\"hljs-string\">\"rules\"<\/span>: {\r\n    ...\r\n  }\r\n}\r\n<\/code><\/pre>\n<p>\u518d\u5728<code>package.json<\/code>\u4e4b\u4e2d\uff0c\u52a0\u5165\u76f8\u5e94\u7684<code>scripts<\/code>\u811a\u672c\u3002<\/p>\n<pre><code class=\"lang-javascript\">  {\r\n    <span class=\"hljs-string\">\"name\"<\/span>: <span class=\"hljs-string\">\"my-module\"<\/span>,\r\n    <span class=\"hljs-string\">\"scripts\"<\/span>: {\r\n      <span class=\"hljs-string\">\"lint\"<\/span>: <span class=\"hljs-string\">\"eslint my-files.js\"<\/span>\r\n    },\r\n    <span class=\"hljs-string\">\"devDependencies\"<\/span>: {\r\n      <span class=\"hljs-string\">\"babel-eslint\"<\/span>: <span class=\"hljs-string\">\"...\"<\/span>,\r\n      <span class=\"hljs-string\">\"eslint\"<\/span>: <span class=\"hljs-string\">\"...\"<\/span>\r\n    }\r\n  }\r\n<\/code><\/pre>\n<p>Mocha\u5219\u662f\u4e00\u4e2a\u6d4b\u8bd5\u6846\u67b6\uff0c\u5982\u679c\u9700\u8981\u6267\u884c\u4f7f\u7528ES6\u8bed\u6cd5\u7684\u6d4b\u8bd5\u811a\u672c\uff0c\u53ef\u4ee5\u4fee\u6539<code>package.json<\/code>\u7684<code>scripts.test<\/code>\u3002<\/p>\n<pre><code class=\"lang-javascript\"><span class=\"hljs-string\">\"scripts\"<\/span>: {\r\n  <span class=\"hljs-string\">\"test\"<\/span>: <span class=\"hljs-string\">\"mocha --ui qunit --compilers js:babel-core\/register\"<\/span>\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u547d\u4ee4\u4e2d\uff0c<code>--compilers<\/code>\u53c2\u6570\u6307\u5b9a\u811a\u672c\u7684\u8f6c\u7801\u5668\uff0c\u89c4\u5b9a\u540e\u7f00\u540d\u4e3a<code>js<\/code>\u7684\u6587\u4ef6\uff0c\u90fd\u9700\u8981\u4f7f\u7528<code>babel-core\/register<\/code>\u5148\u8f6c\u7801\u3002<\/p>\n<h2 id=\"traceur\u8f6c\u7801\u5668\">Traceur\u8f6c\u7801\u5668<\/h2>\n<p>Google\u516c\u53f8\u7684<a href=\"https:\/\/github.com\/google\/traceur-compiler\" target=\"_blank\" rel=\"noopener\">Traceur<\/a>\u8f6c\u7801\u5668\uff0c\u4e5f\u53ef\u4ee5\u5c06ES6\u4ee3\u7801\u8f6c\u4e3aES5\u4ee3\u7801\u3002<\/p>\n<h3 id=\"\u76f4\u63a5\u63d2\u5165\u7f51\u9875\">\u76f4\u63a5\u63d2\u5165\u7f51\u9875<\/h3>\n<p>Traceur\u5141\u8bb8\u5c06ES6\u4ee3\u7801\u76f4\u63a5\u63d2\u5165\u7f51\u9875\u3002\u9996\u5148\uff0c\u5fc5\u987b\u5728\u7f51\u9875\u5934\u90e8\u52a0\u8f7dTraceur\u5e93\u6587\u4ef6\u3002<\/p>\n<pre><code class=\"lang-html\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span> <span class=\"hljs-attr\">src<\/span>=<span class=\"hljs-string\">\"https:\/\/google.github.io\/traceur-compiler\/bin\/traceur.js\"<\/span>&gt;<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span> <span class=\"hljs-attr\">src<\/span>=<span class=\"hljs-string\">\"https:\/\/google.github.io\/traceur-compiler\/bin\/BrowserSystem.js\"<\/span>&gt;<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span> <span class=\"hljs-attr\">src<\/span>=<span class=\"hljs-string\">\"https:\/\/google.github.io\/traceur-compiler\/src\/bootstrap.js\"<\/span>&gt;<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span> <span class=\"hljs-attr\">type<\/span>=<span class=\"hljs-string\">\"module\"<\/span>&gt;<\/span><span class=\"actionscript\">\r\n  <span class=\"hljs-meta\"><span class=\"hljs-meta-keyword\">import<\/span> '.\/Greeter.js';<\/span>\r\n<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u4ee3\u7801\u4e2d\uff0c\u4e00\u5171\u67094\u4e2a<code>script<\/code>\u6807\u7b7e\u3002\u7b2c\u4e00\u4e2a\u662f\u52a0\u8f7dTraceur\u7684\u5e93\u6587\u4ef6\uff0c\u7b2c\u4e8c\u4e2a\u548c\u7b2c\u4e09\u4e2a\u662f\u5c06\u8fd9\u4e2a\u5e93\u6587\u4ef6\u7528\u4e8e\u6d4f\u89c8\u5668\u73af\u5883\uff0c\u7b2c\u56db\u4e2a\u5219\u662f\u52a0\u8f7d\u7528\u6237\u811a\u672c\uff0c\u8fd9\u4e2a\u811a\u672c\u91cc\u9762\u53ef\u4ee5\u4f7f\u7528ES6\u4ee3\u7801\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u7b2c\u56db\u4e2a<code>script<\/code>\u6807\u7b7e\u7684<code>type<\/code>\u5c5e\u6027\u7684\u503c\u662f<code>module<\/code>\uff0c\u800c\u4e0d\u662f<code>text\/javascript<\/code>\u3002\u8fd9\u662fTraceur\u7f16\u8bd1\u5668\u8bc6\u522bES6\u4ee3\u7801\u7684\u6807\u5fd7\uff0c\u7f16\u8bd1\u5668\u4f1a\u81ea\u52a8\u5c06\u6240\u6709<code>type=module<\/code>\u7684\u4ee3\u7801\u7f16\u8bd1\u4e3aES5\uff0c\u7136\u540e\u518d\u4ea4\u7ed9\u6d4f\u89c8\u5668\u6267\u884c\u3002<\/p>\n<p>\u9664\u4e86\u5f15\u7528\u5916\u90e8ES6\u811a\u672c\uff0c\u4e5f\u53ef\u4ee5\u76f4\u63a5\u5728\u7f51\u9875\u4e2d\u653e\u7f6eES6\u4ee3\u7801\u3002<\/p>\n<pre><code class=\"lang-javascript\">&lt;script type=<span class=\"hljs-string\">\"module\"<\/span>&gt;\r\n  <span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">Calc<\/span> <\/span>{\r\n    <span class=\"hljs-keyword\">constructor<\/span>(){\r\n      <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">'Calc constructor'<\/span>);\r\n    }\r\n    add(a, b){\r\n      <span class=\"hljs-keyword\">return<\/span> a + b;\r\n    }\r\n  }\r\n\r\n  <span class=\"hljs-keyword\">var<\/span> c = <span class=\"hljs-keyword\">new<\/span> Calc();\r\n  <span class=\"hljs-built_in\">console<\/span>.log(c.add(<span class=\"hljs-number\">4<\/span>,<span class=\"hljs-number\">5<\/span>));\r\n<span class=\"xml\"><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span><\/span>\r\n<\/code><\/pre>\n<p>\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u4e0a\u9762\u4ee3\u7801\u4f1a\u5728\u63a7\u5236\u53f0\u6253\u5370\u51fa9\u3002<\/p>\n<p>\u5982\u679c\u60f3\u5bf9Traceur\u7684\u884c\u4e3a\u6709\u7cbe\u786e\u63a7\u5236\uff0c\u53ef\u4ee5\u91c7\u7528\u4e0b\u9762\u53c2\u6570\u914d\u7f6e\u7684\u5199\u6cd5\u3002<\/p>\n<pre><code class=\"lang-javascript\">&lt;script&gt;\r\n  <span class=\"hljs-comment\">\/\/ Create the System object<\/span>\r\n  <span class=\"hljs-built_in\">window<\/span>.System = <span class=\"hljs-keyword\">new<\/span> traceur.runtime.BrowserTraceurLoader();\r\n  <span class=\"hljs-comment\">\/\/ Set some experimental options<\/span>\r\n  <span class=\"hljs-keyword\">var<\/span> metadata = {\r\n    traceurOptions: {\r\n      experimental: <span class=\"hljs-literal\">true<\/span>,\r\n      properTailCalls: <span class=\"hljs-literal\">true<\/span>,\r\n      symbols: <span class=\"hljs-literal\">true<\/span>,\r\n      arrayComprehension: <span class=\"hljs-literal\">true<\/span>,\r\n      asyncFunctions: <span class=\"hljs-literal\">true<\/span>,\r\n      asyncGenerators: exponentiation,\r\n      forOn: <span class=\"hljs-literal\">true<\/span>,\r\n      generatorComprehension: <span class=\"hljs-literal\">true<\/span>\r\n    }\r\n  };\r\n  <span class=\"hljs-comment\">\/\/ Load your module<\/span>\r\n  System.import(<span class=\"hljs-string\">'.\/myModule.js'<\/span>, {metadata: metadata}).catch(<span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">ex<\/span>) <\/span>{\r\n    <span class=\"hljs-built_in\">console<\/span>.error(<span class=\"hljs-string\">'Import failed'<\/span>, ex.stack || ex);\r\n  });\r\n<span class=\"xml\"><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span><\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u4ee3\u7801\u4e2d\uff0c\u9996\u5148\u751f\u6210Traceur\u7684\u5168\u5c40\u5bf9\u8c61<code>window.System<\/code>\uff0c\u7136\u540e<code>System.import<\/code>\u65b9\u6cd5\u53ef\u4ee5\u7528\u6765\u52a0\u8f7dES6\u6a21\u5757\u3002\u52a0\u8f7d\u7684\u65f6\u5019\uff0c\u9700\u8981\u4f20\u5165\u4e00\u4e2a\u914d\u7f6e\u5bf9\u8c61<code>metadata<\/code>\uff0c\u8be5\u5bf9\u8c61\u7684<code>traceurOptions<\/code>\u5c5e\u6027\u53ef\u4ee5\u914d\u7f6e\u652f\u6301ES6\u529f\u80fd\u3002\u5982\u679c\u8bbe\u4e3a<code>experimental: true<\/code>\uff0c\u5c31\u8868\u793a\u9664\u4e86ES6\u4ee5\u5916\uff0c\u8fd8\u652f\u6301\u4e00\u4e9b\u5b9e\u9a8c\u6027\u7684\u65b0\u529f\u80fd\u3002<\/p>\n<h3 id=\"\u5728\u7ebf\u8f6c\u6362\">\u5728\u7ebf\u8f6c\u6362<\/h3>\n<p>Traceur\u4e5f\u63d0\u4f9b\u4e00\u4e2a<a href=\"http:\/\/google.github.io\/traceur-compiler\/demo\/repl.html\" target=\"_blank\" rel=\"noopener\">\u5728\u7ebf\u7f16\u8bd1\u5668<\/a>\uff0c\u53ef\u4ee5\u5728\u7ebf\u5c06ES6\u4ee3\u7801\u8f6c\u4e3aES5\u4ee3\u7801\u3002\u8f6c\u6362\u540e\u7684\u4ee3\u7801\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f5c\u4e3aES5\u4ee3\u7801\u63d2\u5165\u7f51\u9875\u8fd0\u884c\u3002<\/p>\n<p>\u4e0a\u9762\u7684\u4f8b\u5b50\u8f6c\u4e3aES5\u4ee3\u7801\u8fd0\u884c\uff0c\u5c31\u662f\u4e0b\u9762\u8fd9\u4e2a\u6837\u5b50\u3002<\/p>\n<pre><code class=\"lang-javascript\">&lt;script src=<span class=\"hljs-string\">\"https:\/\/google.github.io\/traceur-compiler\/bin\/traceur.js\"<\/span>&gt;<span class=\"xml\"><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span><\/span>\r\n&lt;script src=<span class=\"hljs-string\">\"https:\/\/google.github.io\/traceur-compiler\/bin\/BrowserSystem.js\"<\/span>&gt;<span class=\"xml\"><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span><\/span>\r\n&lt;script src=<span class=\"hljs-string\">\"https:\/\/google.github.io\/traceur-compiler\/src\/bootstrap.js\"<\/span>&gt;<span class=\"xml\"><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span><\/span>\r\n&lt;script&gt;\r\n$traceurRuntime.ModuleStore.getAnonymousModule(<span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span>() <\/span>{\r\n<span class=\"hljs-meta\">  \"use strict\"<\/span>;\r\n\r\n  <span class=\"hljs-keyword\">var<\/span> Calc = <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">Calc<\/span>() <\/span>{\r\n    <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">'Calc constructor'<\/span>);\r\n  };\r\n\r\n  ($traceurRuntime.createClass)(Calc, {add: <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">a, b<\/span>) <\/span>{\r\n    <span class=\"hljs-keyword\">return<\/span> a + b;\r\n  }}, {});\r\n\r\n  <span class=\"hljs-keyword\">var<\/span> c = <span class=\"hljs-keyword\">new<\/span> Calc();\r\n  <span class=\"hljs-built_in\">console<\/span>.log(c.add(<span class=\"hljs-number\">4<\/span>, <span class=\"hljs-number\">5<\/span>));\r\n  <span class=\"hljs-keyword\">return<\/span> {};\r\n});\r\n<span class=\"xml\"><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span><\/span>\r\n<\/code><\/pre>\n<h3 id=\"\u547d\u4ee4\u884c\u8f6c\u6362\">\u547d\u4ee4\u884c\u8f6c\u6362<\/h3>\n<p>\u4f5c\u4e3a\u547d\u4ee4\u884c\u5de5\u5177\u4f7f\u7528\u65f6\uff0cTraceur\u662f\u4e00\u4e2aNode\u7684\u6a21\u5757\uff0c\u9996\u5148\u9700\u8981\u7528Npm\u5b89\u88c5\u3002<\/p>\n<pre><code class=\"lang-bash\">$ npm install -g traceur\r\n<\/code><\/pre>\n<p>\u5b89\u88c5\u6210\u529f\u540e\uff0c\u5c31\u53ef\u4ee5\u5728\u547d\u4ee4\u884c\u4e0b\u4f7f\u7528Traceur\u4e86\u3002<\/p>\n<p>Traceur\u76f4\u63a5\u8fd0\u884ces6\u811a\u672c\u6587\u4ef6\uff0c\u4f1a\u5728\u6807\u51c6\u8f93\u51fa\u663e\u793a\u8fd0\u884c\u7ed3\u679c\uff0c\u4ee5\u524d\u9762\u7684<code>calc.js<\/code>\u4e3a\u4f8b\u3002<\/p>\n<pre><code class=\"lang-bash\">$ traceur calc.js\r\nCalc constructor\r\n9\r\n<\/code><\/pre>\n<p>\u5982\u679c\u8981\u5c06ES6\u811a\u672c\u8f6c\u4e3aES5\u4fdd\u5b58\uff0c\u8981\u91c7\u7528\u4e0b\u9762\u7684\u5199\u6cd5\u3002<\/p>\n<pre><code class=\"lang-bash\">$ traceur --script calc.es6.js --out calc.es5.js\r\n<\/code><\/pre>\n<p>\u4e0a\u9762\u4ee3\u7801\u7684<code>--script<\/code>\u9009\u9879\u8868\u793a\u6307\u5b9a\u8f93\u5165\u6587\u4ef6\uff0c<code>--out<\/code>\u9009\u9879\u8868\u793a\u6307\u5b9a\u8f93\u51fa\u6587\u4ef6\u3002<\/p>\n<p>\u4e3a\u4e86\u9632\u6b62\u6709\u4e9b\u7279\u6027\u7f16\u8bd1\u4e0d\u6210\u529f\uff0c\u6700\u597d\u52a0\u4e0a<code>--experimental<\/code>\u9009\u9879\u3002<\/p>\n<pre><code class=\"lang-bash\">$ traceur --script calc.es6.js --out calc.es5.js --experimental\r\n<\/code><\/pre>\n<p>\u547d\u4ee4\u884c\u4e0b\u8f6c\u6362\u751f\u6210\u7684\u6587\u4ef6\uff0c\u5c31\u53ef\u4ee5\u76f4\u63a5\u653e\u5230\u6d4f\u89c8\u5668\u4e2d\u8fd0\u884c\u3002<\/p>\n<h3 id=\"nodejs\u73af\u5883\u7684\u7528\u6cd5\">Node.js\u73af\u5883\u7684\u7528\u6cd5<\/h3>\n<p>Traceur\u7684Node.js\u7528\u6cd5\u5982\u4e0b\uff08\u5047\u5b9a\u5df2\u5b89\u88c5traceur\u6a21\u5757\uff09\u3002<\/p>\n<pre><code class=\"lang-javascript\"><span class=\"hljs-keyword\">var<\/span> traceur = <span class=\"hljs-built_in\">require<\/span>(<span class=\"hljs-string\">'traceur'<\/span>);\r\n<span class=\"hljs-keyword\">var<\/span> fs = <span class=\"hljs-built_in\">require<\/span>(<span class=\"hljs-string\">'fs'<\/span>);\r\n\r\n<span class=\"hljs-comment\">\/\/ \u5c06ES6\u811a\u672c\u8f6c\u4e3a\u5b57\u7b26\u4e32<\/span>\r\n<span class=\"hljs-keyword\">var<\/span> contents = fs.readFileSync(<span class=\"hljs-string\">'es6-file.js'<\/span>).toString();\r\n\r\n<span class=\"hljs-keyword\">var<\/span> result = traceur.compile(contents, {\r\n  filename: <span class=\"hljs-string\">'es6-file.js'<\/span>,\r\n  sourceMap: <span class=\"hljs-literal\">true<\/span>,\r\n  <span class=\"hljs-comment\">\/\/ \u5176\u4ed6\u8bbe\u7f6e<\/span>\r\n  modules: <span class=\"hljs-string\">'commonjs'<\/span>\r\n});\r\n\r\n<span class=\"hljs-keyword\">if<\/span> (result.error)\r\n  <span class=\"hljs-keyword\">throw<\/span> result.error;\r\n\r\n<span class=\"hljs-comment\">\/\/ result\u5bf9\u8c61\u7684js\u5c5e\u6027\u5c31\u662f\u8f6c\u6362\u540e\u7684ES5\u4ee3\u7801<\/span>\r\nfs.writeFileSync(<span class=\"hljs-string\">'out.js'<\/span>, result.js);\r\n<span class=\"hljs-comment\">\/\/ sourceMap\u5c5e\u6027\u5bf9\u5e94map\u6587\u4ef6<\/span>\r\nfs.writeFileSync(<span class=\"hljs-string\">'out.js.map'<\/span>, result.sourceMap);<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>ECMAScript 6\u7b80\u4ecb ECMAScript 6.0\uff08\u4ee5\u4e0b\u7b80\u79f0ES6\uff09\u662fJavaScript\u8bed\u8a00\u7684\u4e0b\u4e00\u4ee3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,3],"tags":[],"_links":{"self":[{"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/posts\/6"}],"collection":[{"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/comments?post=6"}],"version-history":[{"count":3,"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/posts\/6\/revisions"}],"predecessor-version":[{"id":13,"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/posts\/6\/revisions\/13"}],"wp:attachment":[{"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/media?parent=6"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/categories?post=6"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/tags?post=6"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}