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();