<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP ‘test3.jsp‘ starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<script src="js/jquery-2.1.1.min.js"></script>
<script>
//this对象是指在运行时期基于执行环境所绑定的
//this总是指向调用者
var k=10;
function test(){
this.k=20;
}
//alert(test.k); //test()函数未执行,输出undefined
//调用test()相当于调用window.test()，test内部的this指向window对象，改变了全局变量的k的值
test();
alert(k); //20相当于widow.k，输出20，window一般省略
</script>
</head>
<body>
This is my JSP page. <br>
</body>
</html>本文出自 “matengbing” 博客，请务必保留此出处http://matengbing.blog.51cto.com/11395502/1879005
原文：http://matengbing.blog.51cto.com/11395502/1879005