AJAX code not able to call a .php file

Question

I am not able to call a file: "fillDropDown.php".

function MakeRequest()
{
  var xmlHttp = getXMLHttp();
  try 
  {
    xmlHttp.onreadystatechange = function()
    {
        if (xmlHttp.readyState == 4) 
        {
            HandleResponse(xmlHttp.responseText);
        }
    }
    xmlHttp.open("GET", "filldropdown.php", true);
    xmlHttp.send(null);
  }
  catch(err)
  {
    alert(err);
  }
}

Edited: =======

I am using AJAX code as suggested in this link: http://www.switchonthecode.com/tutorials/simple-ajax-php-and-javascript

what's the error you're getting? Are you sure the path is correct (it must be relative to the html page calling the javascript)? — pixeline
– pixeline, Commented Nov 17, 2009 at 10:13
Does getXMLHttp() return the correct XHR object depending on the browser? — karim79
– karim79, Commented Nov 17, 2009 at 10:18
..and/or pop open the javascript console of your browser and tell us if there's an error message there. — conny
– conny, Commented Nov 17, 2009 at 10:28
It is not displaying any error nor passing control to that file. — RKh
– RKh, Commented Nov 17, 2009 at 10:30
please post a link where we can see the whole html+javascript code in action. — pixeline
– pixeline, Commented Nov 17, 2009 at 11:31

Stefan Gehrig · Accepted Answer · 2009-11-17 10:32:06Z

1

Is fillDropDown.php the correct filename?

I just ask because you're calling filldropdown.php... Depending on your webserver and/or your operating system, file paths are case-sensitive!

answered Nov 17, 2009 at 10:32

Stefan Gehrig

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5 Comments

AmbrosiaDevelopments Over a year ago

Lol, just asked that exact same question :P

AmbrosiaDevelopments Over a year ago

so the file name in the filesystem is exactly (case-sensitive): 'filldropdown.php' and not 'fillDropDown.php'?

Stefan Gehrig Over a year ago

What happens if you call filldropdown.php directly from your browser?

Bingy Over a year ago

lol... you have fallen for one of the classic blunders, the most well known being "never start a land war in asia". Case sensitivity of file names is important in unix land! this code will work on a windows server, but not a unix one.. you have to pay close attention to the case that you use. not all file systems are case insensitive.

Bingy Over a year ago

easy enough to tes as well.. try typing the file name into the webbrowser that you are using... If you get a file not found error with filldropdown.php but get success with fillDropDown.php, you will have located your error.

Ei Maung · Accepted Answer · 2009-11-17 10:29:31Z

0

How about with this?

function MakeRequest() {
    var xmlhttp;
    if (window.XMLHttpRequest) {
      // code for IE7+, Firefox, Chrome, Opera, Safari
      xmlhttp=new XMLHttpRequest();
    } else {
      // code for IE6, IE5
      xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
    xmlhttp.onreadystatechange = function() {
        if(xmlhttp.readyState==4) {
          alert("Cool. It's work. :)");
        }
    }

    xmlhttp.open("GET", "filldropdown.php", true);
    xmlhttp.send(null);
}

Make sure, "filldropdown.php" should be in same root with the document which contain above script.

answered Nov 17, 2009 at 10:29

Ei Maung

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2 Comments

Ei Maung Over a year ago

Didn't get any response? Didn't pop up an alert? Then, the problem might be in your "filldropdown.php". Did you echo something in your "filldropdown.php"?

RKh Over a year ago

Yes, I have added echo on the very top of the .php file.

AmbrosiaDevelopments · Accepted Answer · 2009-11-17 10:31:46Z

0

Without more code there is little we can do, doesn't look too bad but something I just want to clarify is that you are calling the file filldropdown.php but in your description you call it fillDropDown.php... case is important.

answered Nov 17, 2009 at 10:31

AmbrosiaDevelopments

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Comments

RKh · Accepted Answer · 2009-11-19 10:43:44Z

0

I found that filldropdown.php script had errors. I fixed it and it is now running.

answered Nov 19, 2009 at 10:43

RKh

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