javascript - Ajax Request returns undefined result -

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i have problem ajax request ( basic function )

here's ajax function

function ajax(){  var activexmodes=["msxml2.xmlhttp", "microsoft.xmlhttp"]  if (window.activexobject){    (var i=0; i<activexmodes.length; i++){    try{     return new activexobject(activexmodes[i])    }    catch(e){    }   }  }  else if (window.xmlhttprequest)   return new xmlhttprequest()  else   return false }

here function

 _2xm.load = function (p, type)     {       p = p.replace("frame_", "");       loading(type);       var req=new ajax();       var __page =encodeuricomponent(p);       req.open("get", "page.php?page="+__page, true);       req.send(null);       req.onreadystatechange=function(){         if (req.readystate==4)         {           if (req.status==200 || window.location.href.indexof("http")==-1)           {            loading(2);            return req.responsetext;           }           else           {             loading(2);             return "an error occured.... ";           }         }       }     }

here part of code uses _2xm.load() function :

_2xm.loaddata = [_2xm.load(pg, 0), _2xm.now(), _2xm.interval * 60];

but result allways undefined, why?

you never returned value _2xm.load, function implicitly evaluates undefined.

you return values anonymous function callback bound req.onreadystatechange, fires @ later stage, asynchronously, long after function call _2xm.load has finished.

perhaps should consider synchronous request.


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