js对象的深度克隆

2022-11-04 21:16:48
 <!DOCTYPE html>

 <html lang="en">

 <head>

     <meta charset="UTF-8">

     <title>js对象的深度克隆</title>

 </head>

 <body>

     <script type="text/javascript">

     var cloneObj = function(obj) {

         var str, newobj = obj.constructor === Array ? [] : {};

         if (typeof obj !== 'object') {

             return;

         } else if (window.JSON) {

             str = JSON.stringify(obj), //系列化对象

             newobj = JSON.parse(str); //还原

         } else {

             for (var i in obj) {

                 newobj[i] = typeof obj[i] === 'object' ?

                 cloneObj(obj[i]) : obj[i];

             }

         }

         return newobj;

     };

     </script>

 </body>

 </html>
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