<style>
p {
text-align: center;
}
span {
color: red;
}
</style><p> <span id="time">5</span> 几秒钟后，自动跳转到主页 </p>
<script>
var second = 5;
function showtime() {
second--;
if (second <= 0) {
location.href = "url";
}
var time = document.getElementById("time");
time.innerHTML = second + "";
}
setInterval(showtime, 1000);
</script>转载联系作者并注明出处：https://www.focusonseo.cn/jcczs/79.html