ajax.js

来自「CallSun 人才招聘求职系统 V2.20」· JavaScript 代码 · 共 79 行

// JScript 文件
function AjaxClass()
{
    this.XmlHttp = null;

    try 
    {
        this.XmlHttp = new XMLHttpRequest();
    } 
    catch(FFError)
    {
        try 
        {
            this.XmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
        } 
        catch(NewIEError)
        {
            try 
            {
　              this.XmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
            } 
            catch(IEError)
            {
　              this.XmlHttp = false;
　          }
　      }
　  }
　  
　  if (this.XmlHttp == null)
　  {
　      alert("浏览器不支持AJAX");
　      return;
　  }

	this.RequestUrl = "";
	this.Method = "get";
	this.IsAsyn = true;
	this.ContentType = "text/html";
	this.Content = null;
    this.ProcessDataEvent = processData;
    this.StateChangeEvent = handleStateChange;
    
    this.SendRequest = function()
    {
	    this.XmlHttp.onreadystatechange = this.StateChangeEvent;
	    try
	    {
		    this.XmlHttp.open(this.Method, this.RequestUrl, this.IsAsyn);
		    if (this.Method.toLowerCase() == "post")
		    {
		        this.XmlHttp.setRequestHeader("Content-Type",this.ContentType);
		    }
		    this.XmlHttp.send(this.Content);
	    }
	    catch(e)
	    {
		    alert(e.message);
	    }	    
    }
    
    function handleStateChange()
    {
	    if (this.XmlHttp.readyState == 4)
	    {
		    if (this.XmlHttp.status == 200)
		    {
			    this.ProcessDataEvent();
		    }
	    }
    }

    function processData()
    {
        //
        //在这里处理服务器返回数据
        //
        alert("ok");
    }
}