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ajaxObj=createAjaxObject();
var url="/MyTodoes/FetchText?id="+id; 
ajaxObj.open("Get",url,true);
ajaxObj.onreadyStateChange=changeTabCallBack;
ajaxObj.send(null);
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function changeTabCallBack(){
  if(ajaxObj.readyState==4){
     // ÏÂÒ»²½ÑéÖ¤
  }
}
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function changeTabCallBack(){
  if(ajaxObj.readyState==4){
    if(ajaxObj.status==200){
       // ·þÎñ¶Ë·µ»ØÁËÕýÈ·Êý¾Ý£¬¿ªÊ¼ÏìÓ¦´¦Àí
    }
  }
}
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Cross Domain AJAX Enabled WCF Service

Background For the basic of how to create an AJAX enabled WCF service, please refer to MSDN: http://msdn.microsoft.com/en-us/library/bb924552.aspx. For the basic of JSONP, please refer to: http://en.wikipedia.org/wiki/JSON#JSONP. This article introduce how to make AJAX enabled WCF service support cr ......
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