文件名称：关于Ajax的主要代码内容
文件大小：3KB
文件格式：TXT
更新时间：2015-10-15 15:02:52
Ajax
------- <%@ page language="java" import="java.util.*" pageEncoding="GBK"%> <html> <head> <title>Ajax验证用户名是否可用</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"> [removed] var xmlhttp;//声明浏览器初始化对象变量 function checkUserExists() { var f = document.form1; var username = f.username.value; if (username == "") { alert("用户名不能为空"); f.username.focus(); return false; } else { doAjax("CheckUserServlet?username=" + username); } }