//去数组重复数据
	Array.prototype.unique = function() {
		var newArray = new Array();
		var len = this.length;
		for ( var i = 0; i < len; i++) {
			for ( var j = i + 1; j < len; j++) {
				if (this[i] === this[j]) { //去重复的比较条件 
					j = ++i;
				}
			}
			newArray.push(this[i]);
		}
		return newArray;
	}

去数组重复数据