Home  >  Article  >  Backend Development  >  AJAX xmlHttp

AJAX xmlHttp

黄舟
黄舟Original
2017-02-24 15:27:281530browse

AJAX xmlHttp

<script type="text/javascript" language="javascript">        
<!--        
//以XML求取数据        
function XmlPost(theEmail)        
{          
var webFileUrl = "../User/CheckUser.aspx?LogonName=" + theEmail;         
 var result = "";                              
 if (window.ActiveXObject) {            
 xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");            
 }            
 else if (window.XMLHttpRequest) {           
  xmlHttp = new XMLHttpRequest();            
  }
          
          //var xmlHttp = new ActiveXObject("MSXML2.XMLHTTP");         
           xmlHttp.open("POST", webFileUrl, false);         
            xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");              
            xmlHttp.send("");                                              
            xmlHttp.onreadystatechange=function()             
            {                
            if (xmlHttp.readyState==4)                 
            {                    
            result = xmlHttp.responseText;                
            }            
            }            
            if(xmlHttp.status!=200)            
            {                
            alert (&#39;网络故障(xmlHttp.status=&#39;+xmlHttp.status+&#39;),请稍后再试!&#39;);            
            }                            
            result = xmlHttp.responseText;           
            result = result.substring(0,result.indexOf("?EX"));                    
            if(result != "false")          
            {                        
            return true;          
            }          
            else          
            {            
            return false;          
            }        
            }        
            //-->    
            </script>&#39;&#39;&#39; <summary>&#39;&#39;&#39; 检测用户是否存在<文件名:../User/CheckUser.aspx>&#39;&#39;&#39; </summary>&#39;&#39;&#39; 
            <remarks>Created by dzh @2006/06/27 18:22</remarks>Partial Class Web_User_CheckUser    
            Inherits System.Web.UI.Page
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load        
    If Request.QueryString("LogonName") Is Nothing Then            
    Response.Write("false" + "?EX")           
     Response.End()            
     Exit Sub        
     End If
        If (New EasyClick.EasyBusiness.UserBusiness).GetUserByLogonName(Request.QueryString("LogonName").ToString) Is Nothing Then         
           Response.Write("false" + "?EX")            
           Response.End()            
           Exit Sub        
           Else            
           Response.Write("true" + "?EX")            
           Response.End()            
           Exit Sub        
           End If    
           End SubEnd Class

The above is the content of AJAX’s xmlHttp. For more related content, please pay attention to the PHP Chinese website (www.php.cn)!


Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn