学步园

兼容值类型的JavaScript对象Clone方法

原贴地址在这里

// Authors Birdshome, 麻袋@博客园<br /> Object.prototype.Clone = function()<br /> {<br /> var objClone;<br /> if ( this.constructor == Object ) objClone = new this.constructor();<br /> else objClone = new this.constructor(this.valueOf());<br /> for ( var key in this )<br /> {<br /> if ( objClone[key] != this[key] )<br /> {<br /> if ( typeof(this[key]) == 'object' )<br /> {<br /> objClone[key] = this[key].Clone();<br /> }<br /> else<br /> {<br /> objClone[key] = this[key];<br /> }<br /> }<br /> }<br /> objClone.toString = this.toString;<br /> objClone.valueOf = this.valueOf;<br /> return objClone;<br /> }<br /> //测试代码<br /> function MyObj(){<br /> this.a = '123';<br /> this.b = 2;<br /> this.toString = function(){<br /> return 'a: ' + this.a + '/n' + 'b: ' + this.b + '/n';<br /> };<br /> };<br /> var o1 = new MyObj();<br /> //alert(typeof o1);<br /> var o2 = o1.Clone();<br /> alert(o2.toString());