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Posted By

damarev on 08/13/07


Tagged

ajax XHConn


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Simple XMLHTTP Interface

Published in: JavaScript 

URL: http://xkr.us/code/javascript/XHConn/

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  1. /** XHConn - Simple XMLHTTP Interface - bfults@gmail.com - 2005-04-08        **
  2.  ** Code licensed under Creative Commons Attribution-ShareAlike License      **
  3.  ** http://creativecommons.org/licenses/by-sa/2.0/                           **/
  4. function XHConn()
  5. {
  6.   var xmlhttp, bComplete = false;
  7.   try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
  8.   catch (e) { try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
  9.   catch (e) { try { xmlhttp = new XMLHttpRequest(); }
  10.   catch (e) { xmlhttp = false; }}}
  11.   if (!xmlhttp) return null;
  12.   this.connect = function(sURL, sMethod, sVars, fnDone)
  13.   {
  14.     if (!xmlhttp) return false;
  15.     bComplete = false;
  16.     sMethod = sMethod.toUpperCase();
  17.  
  18.     try {
  19.       if (sMethod == "GET")
  20.       {
  21.         xmlhttp.open(sMethod, sURL+"?"+sVars, true);
  22.         sVars = "";
  23.       }
  24.       else
  25.       {
  26.         xmlhttp.open(sMethod, sURL, true);
  27.         xmlhttp.setRequestHeader("Method", "POST "+sURL+" HTTP/1.1");
  28.         xmlhttp.setRequestHeader("Content-Type",
  29.           "application/x-www-form-urlencoded");
  30.       }
  31.       xmlhttp.onreadystatechange = function(){
  32.         if (xmlhttp.readyState == 4 && !bComplete)
  33.         {
  34.           bComplete = true;
  35.           fnDone(xmlhttp);
  36.         }};
  37.       xmlhttp.send(sVars);
  38.     }
  39.     catch(z) { return false; }
  40.     return true;
  41.   };
  42.   return this;
  43. }

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