<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>javascript test</title> <script type="text/javascript" src="js/jquery.min.js"></script> <style> body { padding: 20px; } </style> </head> <body> <h3>Object.defineProperty(obj,prop,descriptor)</h3> script running ... <script> (function(w){ w.addProps = function(obj,props){ for(var key in props){ Object.defineProperty(obj,key,{ set: function(newValue){ console.log("new value set："+newValue); key = newValue; }, get: function(){ console.log("value get "); return key; } }); obj[key] = props[key]; } return obj; } })(window) var a = {}, props = {name:‘json‘,age:26,addr:‘usa‘}; addProps(a,props); </script> </body> </html>
后续会逐步更新 ... ...
Object.defineProperty(obj,prop,descriptor)简单使用
原文：http://www.cnblogs.com/xtreme/p/7388064.html