Object doesn't support property or method 'removeClass'

Question

Im trying to do a simple removeClass and addClass to change styles on an Img. ```

``` I have tried doing this with the #Main_Pic_Viewer img inside div and without. js: ``` $('#Small_Pic_Viewer ul li').click( function () { var ThisLI = this.firstElementChild.alt; var BigImgDiv = $('#Main_Pic_Viewer div'); var CurDiv; for (var i = 0, l = BigImgDiv.length; i < l; i++) { CurDiv = BigImgDiv[i]; if (BigImgDiv[i].children[0].alt === ThisLI) { CurDiv.removeClass('Not_Selected').addClass('Selected'); } else { CurDiv.removeClass('Selected'); }; }; } ); ``` Not sure why im getting this error message, as removeClass() is working fine in other…

Accepted Answer

When using a numeric index in a jQuery object you get the original DOM element(s) without the jQuery wrapper.

Just wrap this again in a jQuery function and you'll be fine:

```
// ...

CurDiv = $( BigImgDiv[i] );

// ...
```

Another solution as suggested by @Andreas in the comments is to use the `eq()` method, which is probably the better way:

```
// ...

CurDiv = BigImgDiv.eq(i);

// ...
```

Object doesn't support property or method 'removeClass'

Solution

Problem