改进版通过Json对象实现深复制的方法

var obj = { 
sayName: function() { 
alert(this.name); 
}, 
name:'静水渊' 
};var cloneObj=JSON.parse(JSON.stringify(obj));cloneObj.sayName();

var obj = { 
sayName: function() { 
alert(this.name); 
}, 
name:'静水渊' 
}; 
function clone(){ 
var str,newObj; 
str= JSON.stringify(obj, function(key, value) { 
return (typeof value == 'function' ? value.toString().replace(/^function(.*)/g, "jsonFunction$1") : value); 
}); 
newObj = JSON.parse(str, function (key, value) { 
if (/^jsonFunction(.*)/.test(value)) { 
var strFun = '('+value.replace(/^jsonFunction(.*)/, "function$1")+')'; 
value = eval(strFun); 
} 
return value; 
}); 
return newObj; 
} 
var cloneObj=clone(obj); 
cloneObj.sayName();