<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
</head>
<script>
var i = 0;
var start;
window.onload = function(){
document.getElementById("btn").onclick = function(){
start = setInterval("addTime()",1000);
}
document.getElementById("clo").onclick = function(){
clearInterval(start);
}
}
function addTime(){
i++;
document.getElementById("show").innerHTML = i;
}
</script>
</head>
<body>
<div id="show"></div>
<button id="btn">计时开始</button>
<button id="clo">计时终止</button>
</body>
</html>
简单计时器
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转载自blog.csdn.net/XianYuZong/article/details/78189613
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