Title: ReferenceError: jQuery is not defined
Last modified: August 20, 2016

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# ReferenceError: jQuery is not defined

 *  [dontstop99](https://wordpress.org/support/users/dontstop99/)
 * (@dontstop99)
 * [14 years ago](https://wordpress.org/support/topic/referenceerror-jquery-is-not-defined/)
 * I am unable to add images or edit widgets or edit slugs or even change accessibility
   options by clicking on ‘screen options’.
 * Basically nothing happens when I click. Even changing the theme to Twenty eleven
   does not solve the problem. I am using WPZOOM’s MONOGRAPH THEME.
 * All this works fine with IE7.
 * In console I see this error- ReferenceError: jQuery is not defined
 * I have been stuck with issue for about a week and I have tried everything including
   WP re-install.
 * I think a lot of people are affected by this issue/WP bug and WP support should
   do something about it.

Viewing 6 replies - 16 through 21 (of 21 total)

[←](https://wordpress.org/support/topic/referenceerror-jquery-is-not-defined/?output_format=md)
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 *  Thread Starter [dontstop99](https://wordpress.org/support/users/dontstop99/)
 * (@dontstop99)
 * [14 years ago](https://wordpress.org/support/topic/referenceerror-jquery-is-not-defined/page/2/#post-2705330)
 * Yes. problem is with admin area only.
 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [14 years ago](https://wordpress.org/support/topic/referenceerror-jquery-is-not-defined/page/2/#post-2705335)
 * Try adding `define('CONCATENATE_SCRIPTS', false );` to the bottom of your wp-
   config.php file (just before the `require_once` line).
 *  Thread Starter [dontstop99](https://wordpress.org/support/users/dontstop99/)
 * (@dontstop99)
 * [14 years ago](https://wordpress.org/support/topic/referenceerror-jquery-is-not-defined/page/2/#post-2705343)
 * That worked like a charm.
 * Thank you so very much.
 * Is this a WP bug? I dint understand the reason for it.
 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [14 years ago](https://wordpress.org/support/topic/referenceerror-jquery-is-not-defined/page/2/#post-2705345)
 * It’s not a WP bug but a server issue. In order to increase performance, WP concatenates
   scripts (links them together in a chain or series). Unfortunately some servers
   can’t cope with this, so you’ve just turned that feature off in WordPress.
 *  [Gik000](https://wordpress.org/support/users/gik000/)
 * (@gik000)
 * [13 years, 9 months ago](https://wordpress.org/support/topic/referenceerror-jquery-is-not-defined/page/2/#post-2705469)
 * It works to me too.
    Thanks
 * PS
    maybe this tip has to be written in all wp-config.php files, commented by
   default
 *  [Christoph](https://wordpress.org/support/users/camthor/)
 * (@camthor)
 * [13 years, 4 months ago](https://wordpress.org/support/topic/referenceerror-jquery-is-not-defined/page/2/#post-2705486)
 * Thank you! This advice saved my blog (WP 3.5, problem appeared after update).

Viewing 6 replies - 16 through 21 (of 21 total)

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The topic ‘ReferenceError: jQuery is not defined’ is closed to new replies.

## Tags

 * [jquery](https://wordpress.org/support/topic-tag/jquery/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 21 replies
 * 4 participants
 * Last reply from: [Christoph](https://wordpress.org/support/users/camthor/)
 * Last activity: [13 years, 4 months ago](https://wordpress.org/support/topic/referenceerror-jquery-is-not-defined/page/2/#post-2705486)
 * Status: not resolved

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