js动态时钟

function nowTime(){var now=new Date();var yy=now.getFullYear();var MM=now.getMonth()+1;var dd=now.getDate();var w=now.getDay();var arr=new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");var ww=arr[w];var hh=now.getHours();var mm=now.getMinutes();var ss=now.getSeconds();document.getElementById("p1").innerHTML="现在时间是："+yy+"年"+MM+"月"+dd+"日"+ww+hh+"时"+mm+"分"+ss+"秒";setTimeout(nowTime, 1000);}window.onload=nowTime;