JS实现n秒后自动跳转的两种方法

$(function () {

   setInterval(ChangeTime, 1000);
  });
  function ChangeTime() {
   var time;
   time = $("#time").text();
   time = parseInt(time);
   time--;
   if (time <= 0) {
    window.location.href = "/Home/Index";
   } else {
    $("#time").text(time);
   }

  }

$(function () {

   setTimeout(ChangeTime, 1000);

  });

  function ChangeTime() {
   var time;
   time = $("#time").text();  
   time = parseInt(time);
   time--;
   if (time <= 0) {
    window.location.href = "/Home/Index";
   } else {
    $("#time").text(time);
    setTimeout(ChangeTime, 1000);

   }

  }

<div>你访问的页面出现异常,<span id="time">5</span>秒钟自动跳到首页</div>