<! DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title >111</title>
<style type ="text/css"></style>
<script type="text/javascript">
let time ;
function count(time){
setTimeout(function(){
count(time);
},1000)
if(time < 0) return;
time -- ;
let btn = document.getElementById('btn');
console.log(btn.innerHTML)
// btn.val(time);
btn.innerHTML=time;
//console.log(btn.html())
console.log(time);
}
</script>>
</head>
<body>
<button onclick="count(60);" id="btn">使点劲</button>
</body>
</html>原生js点击按钮倒计时
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转载自blog.csdn.net/qq_36626755/article/details/80398949
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