用js代码实现倒计时的功能

使用js实现倒计时跳转

<div style="text-align: center">
<h1 style="">{{$msg}}成功,倒计时<strong id="tid">3</strong>秒跳转</h1>
</div>
<script>
window.onload = function () {
var tid = document.getElementById('tid');
setInterval (function () {
var middle = tid.innerHTML
tid.innerHTML = middle - 1 ;
if (tid.innerHTML == 0) {
location.href = '倒计时后跳转路径'
}
},1000);
}
</script>