Javascript的对象复制

var source={
		a:10,
		b:20,
		c:'zhongguo',
		d:['abcd','efg',10],
		e:function(){
			alert(1);
		},

	}
	function copy(s,d){
		if(s instanceof Object){
			for(var p in s){
				if(p instanceof Object){
					copy(s[p],d[p])
				}else{
					d[p]=s[p]
				}
			}
		}else{
			d=s;
		}
	}
	var d={};
	copy(source,d)
	console.info(d);
	d.e();

/* 
 * @param {Object} target 目标对象。
 * @param {Object} source 源对象。
 * @param {boolean} deep 是否复制(继承)对象中的对象。
 * @returns {Object} 返回继承了source对象属性的新对象。
 */
Object.extend = function(target, /*optional*/ source, /*optional*/ deep){
    target = target ||
    {};
    var sType = typeof source, i = 1, options;
    if (sType === 'undefined' || sType === 'boolean') {
        deep = sType === 'boolean' ? source : false;
        source = target;
        target = this;
    }
    if (typeof source !== 'object' && Object.prototype.toString.call(source) !== '[object Function]') 
        source = {};
    while (i <= 2) {
        options = i === 1 ? target : source;
        if (options != null) {
            for (var name in options) {
                var src = target[name], copy = options[name];
                if (target === copy) 
                    continue;
                if (deep && copy && typeof copy === 'object' && !copy.nodeType) 
                    target[name] = this.extend(src ||
                    (copy.length != null ? [] : {}), copy, deep);
                else 
                    if (copy !== undefined) 
                        target[name] = copy;
            }
        }
        i++;
    }
    return target;
};

测试代码

var source = {id:1, name:'Jack Source'}, target = {name:'Jack Target', gender:1,tel:{homeTel:"158255",officeTel:"02112585"}}; 
var newObj1 = Object.extend(target, source);