<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <script type="text/javascript"> //Math对象的使用 //alert(Math.PI); /*alert(Math.random()); alert(Math.max(5,9,78,65,23,45)); alert(Math.min(5,9,78,65,23,45));*/ //Date对象的是使用 function sysTime(){ var now=new Date(); var year=now.getFullYear(); var month=now.getMonth()+1; var date=now.getDate(); var day=now.getDay(); var hour=now.getHours(); var minutes=now.getMinutes(); var sec=now.getSeconds(); var arr_week=new Array("星期天","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"+hour+":"+minutes+":"+sec+" "+week; document.getElementById("clock").innerHTML="当前系统时间:"+time; } window.setInterval("sysTime()",1000); </script></head><body οnlοad="sysTime()">
<div id="clock"></div></body>
</html>