js实现多少秒后自动跳转

第一种使用SetInterval：

$(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);

            }

        }

第二种使用SetTimeout：

$(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>