js 获取当前年月日时分秒星期

$("#aa").click(function () {

var date = new Date();

this.year = date.getFullYear();

this.month = date.getMonth() + 1;

this.date = date.getDate();

this.day = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六")[date.getDay()];

this.hour = date.getHours() < 10 ? "0" + date.getHours() : date.getHours();

this.minute = date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();

this.second = date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();

var currentTime = "现在是:" + this.year + "年" + this.month + "月" + this.date + "日 " + this.hour + ":" + this.minute + ":" + this.second + " " + this.day;

alert(currentTime);

});