<body onload="startTime()">
<div id="txt" ></div>
<script>
function startTime(){
var today = new Date();
var h = today.getHours();
var m = today.getMinutes();
var s = today.getSeconds();
m = checkTime(m);
s = checkTime(s);
document.getElementById('txt').innerHTML=h+":"+m+":"+s;
setInterval(function(){
startTime()
},1000)
}
function checkTime(i){
if(i<10){
i = "0"+i;
}
return i
}
</script>
</body>
js 写一个简单的时间计时器
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转载自www.cnblogs.com/lieaiwen/p/9550078.html
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