JS實作深拷貝

var obj = {
			name : "bac",
			age : 123,
			card : ['visa','master'],
			wife : {
					name : 'uio',
					son : {
						name : 'qqq'
					}
				}
			}

	var obj1 = {};

	function deepClone(origin,target){	
		var target = target || {},
			toStr = Object.prototype.toString,
			arrStr = "[object Array]";

		for(var prop in origin){
			if( origin.hasOwnProperty(prop)){
				
				if(origin[prop] !== "null"
				 &&  typeof(origin[prop]) == 'object'){

					if(toStr.call(origin[prop]) == arrStr){
								target[prop] = [];
							}else{
								target[prop] = {};
							}
								
				       deepClone(origin[prop],target[prop]);
					}else{
							target[prop] = origin[prop];
					}
			}

		}

		return target;
}