????：<!DOCTYPE html><html><head> <title>js日期對(duì)象的應(yīng)用</title></head><body onload="startTime()"> <p id="p"></p><script type="tex
<!DOCTYPE html>
<html>
<head>
<title>js日期對(duì)象的應(yīng)用</title>
</head>
<body onload="startTime()">
<p id="p"></p>
<script type="text/javascript">
// 時(shí)鐘案例
function startTime(){
var myday = new Date();//實(shí)例化時(shí)期對(duì)象
var y = myday.getFullYear(); //獲取年份
var h = myday.getHours(); //獲取小時(shí)
var m = myday.getMinutes(); //獲取分鐘
var s = myday.getSeconds(); //獲取秒
var m = checkTime(m);
var s = checkTime(s);
t=setTimeout(function(){startTime()},500);
document.getElementById("p").innerHTML = y + " " +h+":"+m+":"+s;
}
function checkTime(i){
if(i<10){
i = "0"+i;
}
return i;
}
</script>
</body>
</html>
?? ???：滅絕師太?? ??：2019-03-18 09:19:05
???? ??：作業(yè)練習(xí)完成的不錯(cuò),知識(shí)點(diǎn)不要僅限于老師的上課知識(shí),需要課外拓展