ajax 检测用户名是否被占用
ajax 检测用户名是否被占用
发布时间:2016-12-29 来源:查字典编辑
摘要:复制代码代码如下://检测用户名是否被占用functionGetO(){varajax=false;try{ajax=newActiveXO...

复制代码 代码如下:

//检测用户名是否被占用

function GetO(){

var ajax=false;

try {

ajax = new ActiveXObject("Msxml2.XMLHTTP");

} catch (e) {

try {

ajax = new ActiveXObject("Microsoft.XMLHTTP");

} catch (E) {

ajax = false;

}

}

if (!ajax && typeof XMLHttpRequest!='undefined') {

ajax = new XMLHttpRequest();

}

return ajax;

}

function getResult(serverPage) {

var ajax = GetO();

var sep = (-1 < serverPage.indexOf("?")) ? "&" : "?"

var newurl = serverPage + sep + "__=" + encodeURIComponent((new Date()).toString());

ajax.open("GET", newurl, true);

ajax.onreadystatechange = function() {

if (ajax.readyState == 4 && ajax.status == 200) {

if(ajax.responseText==1){

ShowResult(1,"您的用户名可以正常注册")

AjaxResult=true;

}else{

ShowResult(0,"您的用户名被占用了")

AjaxResult=false;

}

}

}

ajax.send(null);

}

function chkUsername(){

var sflag;//标记;

var sErr;//错误信息;

sflag=true;

var re=/^w{2,20}$/;

if(!re.test(document.Form1.UserName.value)){

sflag=false;

sErr="用户名只能输入字母、数字或下划线";

}

if (document.Form1.UserName.value.length>20||document.Form1.UserName.value.length<2){

sflag=false;

sErr="用户名长度必须在2~20个字符之间";

}

if (document.Form1.UserName.value=="" ){

sErr="用户名不能为空";

sflag=false;

}

//ajax检测返回结果

if (!sflag) {

ShowResult(0,sErr)

}else{

getResult("../MemberCheck.aspx?t=1&Name=" + document.Form1.UserName.value);

}

//document.getElementById("spname").innerHTML=ss;

}

function ShowResult(tag,str){

var obj = document.getElementById("spname");

if(tag==0){

obj.style.border="1px solid red";

obj.style.color="red";

}else{

obj.style.border="1px solid green";

obj.style.color="green";

}

obj.innerHTML=str;

obj.style.padding="1px";

}

//取ajax返回的用户问题值

function getQuestionData(sPage){

var ajax = GetO();

var sep = (-1 < sPage.indexOf("?")) ? "&" : "?"

var newurl = sPage + sep + "__=" + encodeURIComponent((new Date()).toString());

ajax.open("GET", newurl, true);

ajax.onreadystatechange = function() {

if (ajax.readyState == 4 && ajax.status == 200) {

if(ajax.responseText==""){

document.getElementById("getstate").innerHTML="用户不存在!"

}

else{

document.g.Question.value=ajax.responseText;

document.g.Question.readOnly=true;

document.getElementById("getpwdstep1").style.display="none";

document.getElementById("getpwdstep2").style.display="block";

document.getElementById("getstate").innerHTML="";

}

}

}

ajax.send(null);

}

function getUserQ(){

//改变报错span的显示样式

document.getElementById("getstate").style.padding="1px 4px";

if (document.g.UserName.value==""){

document.getElementById("getstate").innerHTML="用户名不能为空!"

}else{

document.getElementById("getstate").style.background="red";

document.getElementById("getstate").style.color="white";

document.getElementById("getstate").innerHTML="正在加载数据...";

//设置ajax

getQuestionData("../MemberCheck.aspx?t=2&gName=" + document.g.UserName.value);

}

}

function login(n,p,t)

{

if(t==false){

document.getElementById("pLogin").style.display="none";

document.getElementById("LoginInfo").innerHTML="正在帮您登录,请稍等...";

}

var request;

if(undefined == request){

request = new Request();

}

if(undefined == request._get){

//不支持Ajax获取数据;

if(t==false){

document.getElementById("pLogin").style.display="";

document.getElementById("LoginInfo").innerHTML="不能获取数据";

}

}

else{

userName=n;

toPrev=t;

request.GetNoCache(loginPath + "LoginCheck.aspx" + "?n=" + n + "&p=" + p,loginCheck);

}

}

function loginCheck(result)

{

if (result.readyState!=ReadyState.Complete)

return;

//成功获取;

if (result.status==HttpStatus.OK && result.responseText != "")

{

//执行返回的语句;

//alert(result.responseText);

if (result.responseText=='1')

{

if(toPrev ==false){

document.getElementById("LoginInfo").innerHTML='<ul><li>欢迎' + userName + '</li><li><a href="' + loginPath + 'member/">管理</a></li><li><a href="' + loginPath + 'Logout.aspx">退出</a></li></ul>';

}

else{

if(UrlPrev != ''){

document.location.href=UrlPrev;

}

else{

document.location.href=loginPath;

}

}

return;

}

else

{

if(document.location.href !="http://" + document.location.hostname + loginPath + "Member/Login.aspx")

document.location.href=loginPath + "Member/Login.aspx";

}

}

else

{

//失败;

document.location.href=loginPath + "Member/Login.aspx";

return;

}

}

function checkKey(caputureKey,n,p,t){

var key = window.event.keyCode;

if(key == caputureKey){

login(n,p,t);

}

}

function setLoginInfo(bLogin){

if(bLogin){

document.getElementById("LoginInfo").innerHTML='<ul><li>欢迎' + userName + '</li><li><a href="' + loginPath + 'member/">管理</a></li><li><a href="' + loginPath + 'Logout.aspx">退出</a></li></ul>';

}

else{

}

}

function gotoUrl(s){

window.location.href=loginPath + 'Member/RegUser.html';

}

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