<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%
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>
<script type="text/javascript">
var XMLHttpReq;
function uc(){
alert("ghjgjkhkj");
}
function check(){
alert("haosayou");
var name=document.getElementById("username").value;
if(name==""){
alert("用户名不能为空");
}else {
sendmsg('ActionServlet');
}
}
function sendmsg(url){
createXMLHttpRequest();
XMLHttpReq.onreadystatechange=calback;
XMLHttpReq.open("post",url,true);
XMLHttpReq.setRequestHeader("Content_Type","application/x-www-form-urlencoded");
XMLHttpReq.send("name="+ encodeURI(encodeURI(name)));
}
function XMLHttpRequest(){
if(window.XMLHttpRequest){
XMLHttpReq=new XMLHttpRequest();
}else if(window.ActiveXObject){
try{
XMLHttpReq=new ActiveXObject("Msxml2.XMLHTTP");
}catch(e){
try{
XMLHttpReq=new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e){}
}
}
}
function calback(){
if (XMLThhpReq.readyState==4){
document.getElementById("show").innerHTML("正在查询,请等待。。。。。。。");
}else if(XMLHttpReq.status==200){
var text=XMLHttpReq.responseText;
document.getElementById("show").innerHTML("<font size=3 color=blue >"+text+"</font>");
else{
alert("您请求的页面有误")}
}
}
</script>
</head>
<body>
<form action="">
用户名:
<input type="text" name="username">
<input type="button" name="check" onclick="check()" value="检测是否可用">
<br>
<div id="show"></div>
密 码:
<input type="text" name="userpass">
<br>
</form>
</body>
</html>