$(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>