javascript - ajax keeps returning my main webpage instead of words in output -


i have problem ajax call, ive been searching here , cant find answer to. here happened script worked great 1 second when logged in use again shows me main index page time put http:// inside text area here code.

    function is_valid_url()   var ajaxrequest;     try{         // opera 8.0+, firefox, safari         ajaxrequest = new xmlhttprequest();     } catch (e){         // internet explorer browsers         try{             ajaxrequest = new activexobject("msxml2.xmlhttp");         } catch (e) {             try{                 ajaxrequest = new activexobject("microsoft.xmlhttp");             } catch (e){                 // went wrong                 alert("your browser broke!");                 return false;             }         }     }     // create function receive data sent server     ajaxrequest.onreadystatechange = function(){         if(ajaxrequest.readystate == 4){             var ajaxdisplay = document.getelementbyid('output');             ajaxdisplay.innerhtml = ajaxrequest.responsetext;          }      }      var text = document.getelementbyid("text").value;       var querystring = "?text=" + text;     ajaxrequest.open("get", "textscraper.php" + querystring, true);     ajaxrequest.send(null);     }

here html

<textarea id="text" onkeyup="is_valid_url()" placeholder="what think?" class="posttext"> </textarea>

any appreciated.


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