{"id":115,"date":"2019-01-17T12:04:56","date_gmt":"2019-01-17T04:04:56","guid":{"rendered":"http:\/\/adeqing.com\/?p=115"},"modified":"2019-01-17T12:04:56","modified_gmt":"2019-01-17T04:04:56","slug":"js","status":"publish","type":"post","link":"https:\/\/adeqing.com\/index.php\/2019\/01\/17\/develop\/es6\/115\/","title":{"rendered":"JavsScript\u4e4b\u6d45\u62f7\u8d1d\u4e0e\u6df1\u62f7\u8d1d"},"content":{"rendered":"<p>\u5728\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u5f80\u5f80\u9700\u8981\u590d\u5236\u4e00\u4e2a\u6570\u636e\uff0c\u5728\u590d\u5236\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u65f6\u5019\u4e0d\u4f1a\u51fa\u73b0\u95ee\u9898\uff0c\u5982<code>string<\/code>\u3001<code>number<\/code>\u3001<code>null<\/code>\u7b49\u3002<br \/>\n\u4f46\u662f\u6211\u4eec\u590d\u5236\u4e00\u4e2a\u5f15\u7528\u7c7b\u578b\u7684\u6570\u636e\u65f6\uff0c\u5f80\u5f80\u4f1a\u51fa\u73b0\u95ee\u9898\uff0c\u5982<code>array<\/code>\u3001<code>object<\/code>\u3002<\/p>\n<h2 id=\"\u6d45\u62f7\u8d1d\">\u6d45\u62f7\u8d1d<\/h2>\n<p>\u770b\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\"><span class=\"keyword\">var<\/span> arr1 = [<span class=\"number\">1<\/span>,<span class=\"number\">2<\/span>,<span class=\"number\">3<\/span>];<\/span>\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> arr2 = arr1;<\/span>\r\n<span class=\"line\">arr2.push(<span class=\"number\">4<\/span>)<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u6211\u4eec\u6253\u5370\u4e00\u4e0b\u770b\u770b<code>arr1<\/code>\u00a0<code>arr2<\/code>\u7684\u7ed3\u679c<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\">arr1: [<span class=\"number\">1<\/span>, <span class=\"number\">2<\/span>, <span class=\"number\">3<\/span>, <span class=\"number\">4<\/span>]<\/span>\r\n<span class=\"line\">arr2: [<span class=\"number\">1<\/span>, <span class=\"number\">2<\/span>, <span class=\"number\">3<\/span>, <span class=\"number\">4<\/span>]<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u6211\u4eec\u53d1\u73b0\uff0c\u6539\u53d8<code>arr2<\/code>\u7684\u540c\u65f6\u4e5f\u6539\u53d8\u4e86<code>arr1<\/code>\uff0cWTF\uff1f<\/p>\n<p>\u63a5\u4e0b\u6765\u6211\u4eec\u770b\u770b\u5bf9\u8c61<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span>\r\n<span class=\"line\">4<\/span>\r\n<span class=\"line\">5<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\"><span class=\"keyword\">var<\/span> obj1 = {<\/span>\r\n<span class=\"line\">        name:<span class=\"string\">'wclimb'<\/span><\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> obj2 = obj1<\/span>\r\n<span class=\"line\">obj2.age = <span class=\"number\">24<\/span><\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u6211\u4eec\u6253\u5370\u4e00\u4e0b\u770b\u770b<code>arr1``arr2<\/code>\u7684\u7ed3\u679c<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\">obj1: {<span class=\"attr\">name<\/span>: <span class=\"string\">\"wclimb\"<\/span>, <span class=\"attr\">age<\/span>: <span class=\"number\">24<\/span>}<\/span>\r\n<span class=\"line\">obj2: {<span class=\"attr\">name<\/span>: <span class=\"string\">\"wclimb\"<\/span>, <span class=\"attr\">age<\/span>: <span class=\"number\">24<\/span>}<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u548c\u9884\u60f3\u7684\u4e00\u6837\uff0c\u90fd\u88ab\u5f71\u54cd\u4e86\u3002<\/p>\n<p>\u56e0\u4e3a\u5f15\u7528\u7c7b\u578b\u7684\u590d\u5236\uff0c\u4e24\u4e2a\u5f15\u7528\u7c7b\u578b\u7684\u6307\u9488\u90fd\u6307\u5411\u540c\u4e00\u4e2a\u5806\u5185\u5b58<\/p>\n<p>\u7f51\u4e0a\u5076\u5c14\u4f1a\u770b\u5230\u6709\u4eba\u8bf4<code>slice<\/code>\u3001<code>concat<\/code>\u662f\u6df1\u62f7\u8d1d\uff0c\u5176\u5b9e\u8fd9\u4e24\u4e2a\u662f\u6d45\u590d\u5236\uff0c\u5982\u4e0b<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\"><span class=\"keyword\">var<\/span> arr1 = [<span class=\"number\">1<\/span>,<span class=\"number\">2<\/span>,<span class=\"number\">3<\/span>];<\/span>\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> arr2 = arr1.slice();<\/span>\r\n<span class=\"line\">arr2.push(<span class=\"number\">4<\/span>)<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u7ed3\u679c\uff1a<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\">arr1 [<span class=\"number\">1<\/span>, <span class=\"number\">2<\/span>, <span class=\"number\">3<\/span>]<\/span>\r\n<span class=\"line\">arr2 [<span class=\"number\">1<\/span>, <span class=\"number\">2<\/span>, <span class=\"number\">3<\/span>, <span class=\"number\">4<\/span>]<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u6570\u7ec4\u5143\u7d20\u53ea\u662f\u57fa\u672c\u6570\u636e\u7c7b\u578b\u4e0d\u4f1a\u6709\u5f71\u54cd\uff0c\u90a3\u4e48\u6211\u4eec\u770b\u4e0b\u9762\u7684<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\"><span class=\"keyword\">var<\/span> arr1 = [<span class=\"number\">1<\/span>,<span class=\"number\">2<\/span>,<span class=\"number\">3<\/span>,[<span class=\"number\">4<\/span>]];<\/span>\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> arr2 = arr1.slice();<\/span>\r\n<span class=\"line\">arr2[<span class=\"number\">3<\/span>].push(<span class=\"number\">5<\/span>)<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u7ed3\u679c<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\">arr1: [<span class=\"number\">1<\/span>,<span class=\"number\">2<\/span>,<span class=\"number\">3<\/span>,[<span class=\"number\">4<\/span>,<span class=\"number\">5<\/span>]]   &lt;-----  \u88ab\u5f71\u54cd\u4e86<\/span>\r\n<span class=\"line\">arr2: [<span class=\"number\">1<\/span>,<span class=\"number\">2<\/span>,<span class=\"number\">3<\/span>,[<span class=\"number\">4<\/span>,<span class=\"number\">5<\/span>]]<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u5373\u4f7f\u4f7f\u7528\u4e86<code>slice<\/code>, \u4e24\u4e2a\u6570\u7ec4\u4e5f\u76f8\u4e92\u5f71\u54cd\u4e86\uff0c\u7c7b\u4f3c\u65b9\u6cd5\u9664\u4e86<code>slice<\/code>\u3001<code>concat<\/code>\u8fd8\u6709<code>Array.from<\/code>\u3001<code>...<\/code><\/p>\n<p><strong>\u6df1\u62f7\u8d1d\u548c\u6d45\u62f7\u8d1d\u6700\u6839\u672c\u7684\u533a\u522b\u5728\u4e8e\u662f\u5426\u662f\u771f\u6b63\u83b7\u53d6\u4e86\u4e00\u4e2a\u5bf9\u8c61\u7684\u62f7\u8d1d\u5b9e\u4f53\uff0c\u800c\u4e0d\u662f\u5f15\u7528<\/strong><\/p>\n<h2 id=\"\u6df1\u62f7\u8d1d\">\u6df1\u62f7\u8d1d<\/h2>\n<h3 id=\"Object-assign\">Object.assign<\/h3>\n<p>Object.assign\u53ef\u4ee5\u8fdb\u884c\u4e00\u5c42\u7684\u6df1\u5ea6\u62f7\u8d1d\uff0c\u4e5f\u5c31\u662f\u8ddfslice\u7c7b\u578b\u7684\u6548\u679c<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span>\r\n<span class=\"line\">4<\/span>\r\n<span class=\"line\">5<\/span>\r\n<span class=\"line\">6<\/span>\r\n<span class=\"line\">7<\/span>\r\n<span class=\"line\">8<\/span>\r\n<span class=\"line\">9<\/span>\r\n<span class=\"line\">10<\/span>\r\n<span class=\"line\">11<\/span>\r\n<span class=\"line\">12<\/span>\r\n<span class=\"line\">13<\/span>\r\n<span class=\"line\">14<\/span>\r\n<span class=\"line\">15<\/span>\r\n<span class=\"line\">16<\/span>\r\n<span class=\"line\">17<\/span>\r\n<span class=\"line\">18<\/span>\r\n<span class=\"line\">19<\/span>\r\n<span class=\"line\">20<\/span>\r\n<span class=\"line\">21<\/span>\r\n<span class=\"line\">22<\/span>\r\n<span class=\"line\">23<\/span>\r\n<span class=\"line\">24<\/span>\r\n<span class=\"line\">25<\/span>\r\n<span class=\"line\">26<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\"><span class=\"keyword\">var<\/span> obj1 = {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">\t\ttest4: {}<\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> obj2 = <span class=\"built_in\">Object<\/span>.assign({}, obj1)<\/span>\r\n<span class=\"line\">obj2.age = <span class=\"number\">24<\/span><\/span>\r\n\r\n<span class=\"line\">\u7ed3\u679c\uff1a<\/span>\r\n<span class=\"line\">obj1: {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {}<\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\">obj2: {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {},<\/span>\r\n<span class=\"line\">        age: <span class=\"number\">24<\/span><\/span>\r\n<span class=\"line\">    };<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u4f46\u662f\u6211\u4eec\u770b\u4e0b\u9762\u7684\u4f8b\u5b50<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span>\r\n<span class=\"line\">4<\/span>\r\n<span class=\"line\">5<\/span>\r\n<span class=\"line\">6<\/span>\r\n<span class=\"line\">7<\/span>\r\n<span class=\"line\">8<\/span>\r\n<span class=\"line\">9<\/span>\r\n<span class=\"line\">10<\/span>\r\n<span class=\"line\">11<\/span>\r\n<span class=\"line\">12<\/span>\r\n<span class=\"line\">13<\/span>\r\n<span class=\"line\">14<\/span>\r\n<span class=\"line\">15<\/span>\r\n<span class=\"line\">16<\/span>\r\n<span class=\"line\">17<\/span>\r\n<span class=\"line\">18<\/span>\r\n<span class=\"line\">19<\/span>\r\n<span class=\"line\">20<\/span>\r\n<span class=\"line\">21<\/span>\r\n<span class=\"line\">22<\/span>\r\n<span class=\"line\">23<\/span>\r\n<span class=\"line\">24<\/span>\r\n<span class=\"line\">25<\/span>\r\n<span class=\"line\">26<\/span>\r\n<span class=\"line\">27<\/span>\r\n<span class=\"line\">28<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\"><span class=\"keyword\">var<\/span> obj1 = {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {}<\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> obj2 = <span class=\"built_in\">Object<\/span>.assign({}, obj1)<\/span>\r\n<span class=\"line\">obj2.age = <span class=\"number\">24<\/span><\/span>\r\n<span class=\"line\">obj2.test4.val = <span class=\"string\">'1'<\/span>;<\/span>\r\n\r\n<span class=\"line\">\u7ed3\u679c\uff1a <\/span>\r\n\r\n<span class=\"line\">obj1: {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {<span class=\"attr\">val<\/span>: <span class=\"number\">1<\/span>}   &lt;-----  \u88ab\u5f71\u54cd\u4e86<\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\">obj2: {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {<span class=\"attr\">val<\/span>: <span class=\"number\">1<\/span>},<\/span>\r\n<span class=\"line\">        age: <span class=\"number\">24<\/span><\/span>\r\n<span class=\"line\">    };<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h3 id=\"JSON-parse-JSON-stringify-obj\">JSON.parse(JSON.stringify(obj))<\/h3>\n<p>\u8bf4\u5230\u6df1\u62f7\u8d1d\uff0c\u4f60\u4e00\u5b9a\u4f1a\u60f3\u5230<code>JSON.parse(JSON.stringify(obj))<\/code>;<br \/>\n\u6ca1\u9519\uff0c\u8fd9\u6837\u53ef\u4ee5\u5b8c\u6210\u4e00\u4e2a\u6df1\u62f7\u8d1d\uff0c\u770b\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span>\r\n<span class=\"line\">4<\/span>\r\n<span class=\"line\">5<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\"><span class=\"keyword\">var<\/span> obj1 = {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span><\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> obj2 = <span class=\"built_in\">JSON<\/span>.parse(<span class=\"built_in\">JSON<\/span>.stringify(obj1))<\/span>\r\n<span class=\"line\">obj2.age = <span class=\"number\">24<\/span><\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u7ed3\u679c<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\">obj1: {<span class=\"attr\">name<\/span>: <span class=\"string\">\"wclimb\"<\/span>}   &lt;-----  \u6ca1\u6709\u88ab\u5f71\u54cd\u4e86<\/span>\r\n<span class=\"line\">obj2: {<span class=\"attr\">name<\/span>: <span class=\"string\">\"wclimb\"<\/span>, <span class=\"attr\">age<\/span>: <span class=\"number\">24<\/span>}<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>perfect\uff0c\u4f46\u662f\u8fd9\u4e2a\u65b9\u6cd5\u4f1a\u6709\u4e00\u4e2a\u95ee\u9898\uff0c\u5982\u4e0b\u4f8b\uff1a<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span>\r\n<span class=\"line\">4<\/span>\r\n<span class=\"line\">5<\/span>\r\n<span class=\"line\">6<\/span>\r\n<span class=\"line\">7<\/span>\r\n<span class=\"line\">8<\/span>\r\n<span class=\"line\">9<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\"><span class=\"keyword\">var<\/span> <span class=\"keyword\">var<\/span> obj1 = {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {}<\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> obj2 = <span class=\"built_in\">JSON<\/span>.parse(<span class=\"built_in\">JSON<\/span>.stringify(obj1))<\/span>\r\n<span class=\"line\">obj2.age = <span class=\"number\">24<\/span><\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u7ed3\u679c<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span>\r\n<span class=\"line\">4<\/span>\r\n<span class=\"line\">5<\/span>\r\n<span class=\"line\">6<\/span>\r\n<span class=\"line\">7<\/span>\r\n<span class=\"line\">8<\/span>\r\n<span class=\"line\">9<\/span>\r\n<span class=\"line\">10<\/span>\r\n<span class=\"line\">11<\/span>\r\n<span class=\"line\">12<\/span>\r\n<span class=\"line\">13<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\">obj1: {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {}<\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\">obj2: {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">\"wclimb\"<\/span>,<\/span>\r\n<span class=\"line\">        age: <span class=\"number\">24<\/span>, <\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test4: {}<\/span>\r\n<span class=\"line\">    }<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u90a3\u4e24\u4e2a\u4e2a\u8dd1\u54ea\u53bb\u4e86\uff1f\u6240\u4ee5\u8fd9\u4e2a\u65b9\u6cd5\u4e0d\u80fd\u591f\u62f7\u8d1d\u503c\u4e3a<code>undefined<\/code>\u3001<code>function<\/code><\/p>\n<h3 id=\"\u6df1\u62f7\u8d1d\u5b9e\u73b0\">\u6df1\u62f7\u8d1d\u5b9e\u73b0<\/h3>\n<p>\u90a3\u4e48\u600e\u4e48\u8fdb\u884c\u6df1\u62f7\u8d1d\u5462\uff1f\u6211\u7684\u65b9\u6cd5\u662f\uff1a<\/p>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span>\r\n<span class=\"line\">4<\/span>\r\n<span class=\"line\">5<\/span>\r\n<span class=\"line\">6<\/span>\r\n<span class=\"line\">7<\/span>\r\n<span class=\"line\">8<\/span>\r\n<span class=\"line\">9<\/span>\r\n<span class=\"line\">10<\/span>\r\n<span class=\"line\">11<\/span>\r\n<span class=\"line\">12<\/span>\r\n<span class=\"line\">13<\/span>\r\n<span class=\"line\">14<\/span>\r\n<span class=\"line\">15<\/span>\r\n<span class=\"line\">16<\/span>\r\n<span class=\"line\">17<\/span>\r\n<span class=\"line\">18<\/span>\r\n<span class=\"line\">19<\/span>\r\n<span class=\"line\">20<\/span>\r\n<span class=\"line\">21<\/span>\r\n<span class=\"line\">22<\/span>\r\n<span class=\"line\">23<\/span>\r\n<span class=\"line\">24<\/span>\r\n<span class=\"line\">25<\/span>\r\n<span class=\"line\">26<\/span>\r\n<span class=\"line\">27<\/span>\r\n<span class=\"line\">28<\/span>\r\n<span class=\"line\">29<\/span>\r\n<span class=\"line\">30<\/span>\r\n<span class=\"line\">31<\/span>\r\n<span class=\"line\">32<\/span>\r\n<span class=\"line\">33<\/span>\r\n<span class=\"line\">34<\/span>\r\n<span class=\"line\">35<\/span>\r\n<span class=\"line\">36<\/span>\r\n<span class=\"line\">37<\/span>\r\n<span class=\"line\">38<\/span>\r\n<span class=\"line\">39<\/span>\r\n<span class=\"line\">40<\/span>\r\n<span class=\"line\">41<\/span>\r\n<span class=\"line\">42<\/span>\r\n<span class=\"line\">43<\/span>\r\n<span class=\"line\">44<\/span>\r\n<span class=\"line\">45<\/span>\r\n<span class=\"line\">46<\/span>\r\n<span class=\"line\">47<\/span>\r\n<span class=\"line\">48<\/span>\r\n<span class=\"line\">49<\/span>\r\n<span class=\"line\">50<\/span>\r\n<span class=\"line\">51<\/span>\r\n<span class=\"line\">52<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\"><span class=\"function\"><span class=\"keyword\">function<\/span> <span class=\"title\">deepCopy<\/span>(<span class=\"params\">obj<\/span>)<\/span>{<\/span>\r\n<span class=\"line\">    <span class=\"keyword\">var<\/span> result;<\/span>\r\n<span class=\"line\">    <span class=\"keyword\">var<\/span> toString = <span class=\"built_in\">Object<\/span>.prototype.toString<\/span>\r\n<span class=\"line\">    <span class=\"keyword\">if<\/span>(toString.call(obj) === <span class=\"string\">'[object Array]'<\/span>){<\/span>\r\n<span class=\"line\">        result = []<\/span>\r\n<span class=\"line\">        <span class=\"keyword\">for<\/span>(<span class=\"keyword\">var<\/span> i = <span class=\"number\">0<\/span> ;i &lt; obj.length; i++){<\/span>\r\n<span class=\"line\">            result[i] = deepCopy(obj[i])<\/span>\r\n<span class=\"line\">        }<\/span>\r\n<span class=\"line\">    }<span class=\"keyword\">else<\/span> <span class=\"keyword\">if<\/span>(toString.call(obj) === <span class=\"string\">'[object Object]'<\/span>){<\/span>\r\n<span class=\"line\">        result = {};<\/span>\r\n<span class=\"line\">        <span class=\"keyword\">for<\/span> (<span class=\"keyword\">var<\/span> key <span class=\"keyword\">in<\/span> obj) {<\/span>\r\n<span class=\"line\">            <span class=\"keyword\">if<\/span> (obj.hasOwnProperty(key)) {<\/span>\r\n<span class=\"line\">                result[key] = deepCopy(obj[key])<\/span>\r\n<span class=\"line\">            }<\/span>\r\n<span class=\"line\">        }<\/span>\r\n<span class=\"line\">    }<span class=\"keyword\">else<\/span>{<\/span>\r\n<span class=\"line\">        <span class=\"keyword\">return<\/span> obj<\/span>\r\n<span class=\"line\">    }<\/span>\r\n<span class=\"line\">    <span class=\"keyword\">return<\/span> result<\/span>\r\n<span class=\"line\">}<\/span>\r\n\r\n\r\n<span class=\"line\">\u6d4b\u8bd5\u4e00\u4e0b\uff1a<\/span>\r\n\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> obj1 = {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {}<\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> obj2 = deepCopy(obj1)<\/span>\r\n<span class=\"line\">obj2.age = <span class=\"number\">24<\/span><\/span>\r\n<span class=\"line\">obj2.test4.val = <span class=\"string\">'1'<\/span>;<\/span>\r\n\r\n<span class=\"line\">\u8fd4\u56de\uff1a <\/span>\r\n\r\n<span class=\"line\">obj1: {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {}   &lt;-----  \u6ca1\u6709\u88ab\u5f71\u54cd\u4e86<\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\">obj2: {<\/span>\r\n<span class=\"line\">        age: <span class=\"number\">24<\/span>,<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {<span class=\"attr\">val<\/span>: <span class=\"string\">'1'<\/span>}<\/span>\r\n<span class=\"line\">    };<\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h3 id=\"jQuery\u7684\u5b9e\u73b0\">jQuery\u7684\u5b9e\u73b0<\/h3>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span>\r\n<span class=\"line\">4<\/span>\r\n<span class=\"line\">5<\/span>\r\n<span class=\"line\">6<\/span>\r\n<span class=\"line\">7<\/span>\r\n<span class=\"line\">8<\/span>\r\n<span class=\"line\">9<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\"><span class=\"keyword\">var<\/span> obj1 = {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {}<\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> obj2 = $.extend(<span class=\"literal\">true<\/span>, {}, obj1)<\/span>\r\n<span class=\"line\">obj2.age = <span class=\"number\">24<\/span><\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h3 id=\"lodash\u7684\u5b9e\u73b0\">lodash\u7684\u5b9e\u73b0<\/h3>\n<figure class=\"highlight js\">\n<table>\n<tbody>\n<tr>\n<td class=\"gutter\">\n<pre><span class=\"line\">1<\/span>\r\n<span class=\"line\">2<\/span>\r\n<span class=\"line\">3<\/span>\r\n<span class=\"line\">4<\/span>\r\n<span class=\"line\">5<\/span>\r\n<span class=\"line\">6<\/span>\r\n<span class=\"line\">7<\/span>\r\n<span class=\"line\">8<\/span>\r\n<span class=\"line\">9<\/span><\/pre>\n<\/td>\n<td class=\"code\">\n<pre><span class=\"line\"><span class=\"keyword\">var<\/span> obj1 = {<\/span>\r\n<span class=\"line\">        name: <span class=\"string\">'wclimb'<\/span>,<\/span>\r\n<span class=\"line\">        test1: <span class=\"literal\">null<\/span>,<\/span>\r\n<span class=\"line\">        test2: <span class=\"literal\">undefined<\/span>,<\/span>\r\n<span class=\"line\">        test3: <span class=\"function\"><span class=\"keyword\">function<\/span>()<\/span>{alert(<span class=\"number\">1<\/span>)},<\/span>\r\n<span class=\"line\">        test4: {}<\/span>\r\n<span class=\"line\">    };<\/span>\r\n<span class=\"line\"><span class=\"keyword\">var<\/span> obj2 = _.cloneDeep(obj1)<\/span>\r\n<span class=\"line\">obj2.age = <span class=\"number\">24<\/span><\/span><\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>&nbsp;<\/p>\n<p>\u8f6c\u81ea\u00a0http:\/\/www.wclimb.site\/2018\/07\/29\/JavsScript%E4%B9%8B%E6%B5%85%E6%8B%B7%E8%B4%9D%E4%B8%8E%E6%B7%B1%E6%8B%B7%E8%B4%9D\/<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u5f80\u5f80\u9700\u8981\u590d\u5236\u4e00\u4e2a\u6570\u636e\uff0c\u5728\u590d\u5236\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u65f6\u5019\u4e0d\u4f1a\u51fa\u73b0\u95ee\u9898\uff0c\u5982string\u3001number\u3001 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"_links":{"self":[{"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/posts\/115"}],"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=115"}],"version-history":[{"count":1,"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/posts\/115\/revisions"}],"predecessor-version":[{"id":116,"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/posts\/115\/revisions\/116"}],"wp:attachment":[{"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/media?parent=115"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/categories?post=115"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/adeqing.com\/index.php\/wp-json\/wp\/v2\/tags?post=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}