lab1：建立顯示時間，自動跳秒
<html>
<body onLoad="setck()" >
<script>
function dw(line)
{
document.write(line + "<br>");
}
function setck()
{
var d = new Date();
var y = d.getHours();
var m = d.getMinutes();
var s = d.getSeconds();
m = checkTime(m);
s = checkTime(s);
var now = y + ":" + m + ":" + s;
document.getElementById("display").innerHTML = ("Now time:" + now);
setTimeout(function(){setck()} , 1000);
}
function checkTime(i) {
if(i<10){
i = "0" + i;
}
return i;
}
</script>
<div id="display">dispaly</div>
</body>
</html>
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