javascript 数组去除重复值

再网上看到这个是比较好的

Array.prototype.unique = function(){
		var newArray = [],
			temp = {};
		for(var i = 0; i < this.length; i++){
			temp[typeof(this[i])+this[i]] = this[i];
		}
		for(var j in temp){
			newArray.push(temp[j]);
		}
		return newArray;
	};

http://www.cssbox.net/javascript-array-unique.html