学习了JS日期类和时钟实例.
~~~
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript">
function startTime () {
var today=new Date();
var y=today.getFullYear();
var mon=today.getMonth()+1;
mon=changNum(mon);
var d=today.getDay();
d=changNum(d);
var h=today.getHours();
var m=today.getMinutes();
m=changNum(m);
var s=today.getSeconds();
s=changNum(s);
document.getElementById("timeid").innerHTML=y+"年"+mon+"月"+d+"日"+h+":"+m+":"+s;
t=setTimeout(function(){
startTime();
},500);
}
function changNum(i){ //月、日、秒如果小于10数字前加0
if(i<10){
return "0"+i;
}
return i;
}
</script>
</head>
<body onload="startTime()">
<h1 id="timeid"></h1>
</body>
</html>
~~~
