function realSysTime(clock){
var now=new Date();
var year=now.getFullYear();
var month=now.getMonth();
var date=now.getDate();
var day=now.getDay();
var hour=now.getHours();
var minu=now.getMinutes();
var sec=now.getSeconds();
if(Number(sec)<10){
sec="0"+sec.toString();
}
month=month+1;
var arr_week=new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
var week=arr_week[day];
var time=year+"年"+month+"月"+date+"日 "+week+" "+hour+":"+minu+":"+sec; //组合系统时间
clock.innerHTML=time;
}
window.οnlοad=function(){
window.setInterval("realSysTime(clock)",1000);
}
<div class="symTime" id="clock"></div>
页面动态刷新时间，每秒刷新一次。
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