javascript得到当前日期

$(document).ready(function(){

var timer = new Date();

var weekDay, month, day;

weekDay = timer.getDay();

switch(weekDay){

case 0: weekDay="星期天";break;

case 1: weekDay="星期一";break;

case 2: weekDay="星期二";break;

case 3: weekDay="星期三";break;

case 4: weekDay="星期四";break;

case 5: weekDay="星期五";break;

case 6: weekDay="星期六";break;

}

month = timer.getMonth() + 1;

day = timer.getFullYear() + "年" + month + "月" + timer.getDate() + "日" + weekDay;

return day;

});