Comments on: “jQuery is not defined” WordPress Error Fix

By: J. Phillips

J. Phillips — Mon, 16 Apr 2012 16:13:52 +0000

Huge help. HUGE. Re-uploaded /wp-includes folder. All is well. I was running out of ideas there.

By: Astrum People

Astrum People — Thu, 29 Mar 2012 23:00:46 +0000

It was crazy:) I’ve added

define(‘CONCATENATE_SCRIPTS’, false);
define(‘COMPRESS_SCRIPTS’, false);

to wp-config.php and it worked for me.

By: Virendra Dugar

Virendra Dugar — Mon, 26 Mar 2012 05:54:44 +0000

Good post but I noticed that there are various reasons for this error. I found a good post which have listed all possible reasons of this error. Thought of sharing with you.

http://jquerybyexample.blogspot.com/2012/03/various-reasons-and-solutions-of-jquery.html

By: Kien Leong

Kien Leong — Fri, 09 Mar 2012 11:05:13 +0000

Thank you. This worked perfectly for me.

By: Nikolaos Tsourlakis

Nikolaos Tsourlakis — Sun, 12 Feb 2012 08:10:11 +0000

Hallo ich hab das ganze mal zusammengefasst

http://www.erfolg-reich.org/wordpress-jquery-not-defined/

Hoffe konnte damit ein wenig helfen.

By: nie-mehr-benzin.de

nie-mehr-benzin.de — Tue, 27 Dec 2011 20:17:50 +0000

The above solutions make absolutely no sense.

The only right solution is to block the concatenation of scripts:

add in wp-config.php:

define(‘CONCATENATE_SCRIPTS’, false);

That works.

By: Keith Davis

Keith Davis — Sat, 10 Dec 2011 11:17:21 +0000

Thanks for your help
Was pulling my hair out having problems with script errors.

“Re upload the wp-includesjs folder and overwrite whatever is in there.
That’s what fixed it for me”

Worked first time.

Saved me a lot of grief.

By: Lopez

Lopez — Mon, 10 Oct 2011 10:02:58 +0000

I found that my in my Theme functions file there was an extra few lines trying to change the jQuery files.
For example in ./wp-content/themes/twentyten/functions.php near the bottom:

function my_init_method() {
wp_deregister_script( ‘jquery’ );
wp_register_script( ‘jquery’, ‘http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.js’);
wp_enqueue_script( ‘jquery’ );
}

add_action(‘init’, ‘my_init_method’);

I believe these were added by some plug-in. Just comment them out and the jQuery should function again. My problem was on the menu editor under appearance. I couldn’t drag the menus about.

By: Wordpress Admin Errors | Cyrozap's Tech Projects

Wordpress Admin Errors | Cyrozap's Tech Projects — Sun, 14 Aug 2011 01:38:05 +0000

[...] was having EXACTLY the same errors as this guy–basically, none of the javascript elements in WordPress were working, ex. Check All [...]

By: hnhd

hnhd — Sat, 09 Jul 2011 12:21:25 +0000

thank you, it works for me!!!