Javascript中alert</script>的方法：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE html> <html> <head> <base href="<%=basePath%>"> <meta charset="UTF-8"> <title>b index</title> <link rel='stylesheet' type="text/css" href='b/css/bootstrap.css'> <style type="text/css"> .s1{ width: 100px; height: 100px; background-color: pink; } .s2{ width: 50px; height: 50px; background-color: green; } </style> </head> <body style="margin:1px;"> <div id="div001">div001</div> <div id='div002'>div002</div> <div id='div003'>div003</div> <div> <button id="btn001">click me to alert script </button> <button id="btn002">click me to alert script </button> </div> <script type="text/javascript" src="js/jquery-1.11.1.js"></script> <script type="text/javascript" src="b/js/bootstrap.js"></script> <script type="text/javascript" src="js/index042.js"></script> <script type="text/javascript"> function btn001Click(e) { alert('</script>'); // 如果写成下面这样，这个页面会出错；Uncaught SyntaxError: Unexpected token ILLEGAL //alert('</script>');//即便这样写，也是有错误的；除非增加一个空格< / ,或者像上面转义一下； } </script> </body> </html>
$(function() { $('#btn001').click(btn001Click); $('#btn002').click(btn002Click); }); function btn002Click(e) { // 在js文件中，可以随意alert； alert('</script>2'); }