Right now I'm getting this strange error from IE which is basically

'null' is null or not an object

The line number it gives is pletely off so I don't put much credit into that however I think I narrowed it down to where it's ing from.

function openSong(songlink){
     $('#smallbox').slideDown();
     requestCompleteSong('<tr><td>'+songlink+'</td></tr>');
  }

The code above doesn't produce any errors from IE, however when I do an AJAX GET request using jQuery then it seems to throw this error

function openSong(songlink){
     $('#smallbox').slideDown();
     $.get("getSong.php?fake="+makeid(),{ id: songlink },requestCompleteSong);
  }

'songlink' definitely isn't null because the first function I posted works fine. Here is makeid().

function makeid()
{
  var text = "";
  var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

  for( var i=0; i < 5; i++ )
    text += possible.charAt(Math.floor(Math.random() * possible.length));

  return text;
}

Can anybody see why IE is throwing this error?

Right now I'm getting this strange error from IE which is basically

'null' is null or not an object

The line number it gives is pletely off so I don't put much credit into that however I think I narrowed it down to where it's ing from.

function openSong(songlink){
     $('#smallbox').slideDown();
     requestCompleteSong('<tr><td>'+songlink+'</td></tr>');
  }

The code above doesn't produce any errors from IE, however when I do an AJAX GET request using jQuery then it seems to throw this error

function openSong(songlink){
     $('#smallbox').slideDown();
     $.get("getSong.php?fake="+makeid(),{ id: songlink },requestCompleteSong);
  }

'songlink' definitely isn't null because the first function I posted works fine. Here is makeid().

function makeid()
{
  var text = "";
  var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

  for( var i=0; i < 5; i++ )
    text += possible.charAt(Math.floor(Math.random() * possible.length));

  return text;
}

Can anybody see why IE is throwing this error?

• javascript
• jquery
• internet-explorer

• 1 FYI, how IE calculates line numbers is like this: concatenate all javascript files/code in the order they appear in the HTML page into a single large file, then count the line number. – slebetman Commented Sep 19, 2010 at 4:39
• Also, IE developer toolbar would show the erroneous code at the line number from IE. – Hari Pachuveetil Commented Sep 19, 2010 at 5:10

1 Answer 1

This is indeed one of the most generic Internet Explorer JavaScript errors. It means that you are invoking methods of some object which is null. While I cannot tell which part of your code is causing this error I can suggest a way to find it out. You can use the developer tools to debug your code - just put a debugger statement in your code:

function openSong(songlink){
 debugger;
 // rest of the code
}

Then enable debugging from the IE developer toolbar and refresh your page.