定时器之页面跳转
定时器：
只跳转一次：
var t1 = setTimeout(function a(){},time);
cleanTimeout(t1);
循环跳转多次：
var t2 = setInterval(function a(){},time);
clearInterval(t2);
js跳转：
window.location.href='${pageContext.request.contextPath}/login/first';
项目路径：
//==>localhost:8080/SSMProject
${pageContext.request.contextPath}
例子：
<%--
Created by IntelliJ IDEA.
User: Administrator
Date: 2018/12/26 0026
Time: 下午 3:36
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java"%>
<html>
<head>
<title>首页</title>
<style>
h1 {
text-align: center;
}
h4 {
text-align: center;
height: 100%;
width: 100%;
}
</style>
</head>
<body>
<h1>欢迎来到会员管理系统</h1>
<h4 id="mes"></h4>
<script type="text/javascript">
var s = 6;
// 向页面添加内容
function f1(s){
document.getElementById("mes").innerHTML="请稍等，还有"+s+"秒跳转";
}
setInterval(function name(){
s=s-1;
f1(s);
if(s==0){
clearInterval();
window.location.href='${pageContext.request.contextPath}/login/first';
}
}, 1000);
</script>
</body>
</html>