JS克隆

Object.prototype.Clone = function(){
    var objClone;
    if (this.constructor == Object){
        objClone = new this.constructor(); 
    }else{
        objClone = new this.constructor(this.valueOf()); 
    }
    for(var key in this){
        if ( objClone[key] != this[key] ){ 
            if ( typeof(this[key]) == 'object' ){ 
                objClone[key] = this[key].Clone();
            }else{
                objClone[key] = this[key];
            }
        }
    }
    objClone.toString = this.toString;
    objClone.valueOf = this.valueOf;
    return objClone; 
} 

当然也可以

function clone(myObj)
{
    if(typeof(myObj) != 'object') return myObj;
    if(myObj == null) return myObj;
    var myNewObj = new Object(); 
    for(var i in myObj) myNewObj[i] = clone(myObj[i]); 
    return myNewObj;
}