Title: [Plugin: Meta Box] Uncaught TypeError: Object [object Object] has no method 'on'
Last modified: August 20, 2016

---

# [Plugin: Meta Box] Uncaught TypeError: Object [object Object] has no method 'on'

 *  [orionis23](https://wordpress.org/support/users/orionis23/)
 * (@orionis23)
 * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-meta-box-uncaught-typeerror-object-object-object-has-no-method-on/)
 * I’ve been using Rilwis’ meta box script since it’s pre plugin beginnings and 
   never had problems with it. I’ve got it on various different sites, both 3.2+
   and 3.3+. For some reason one of my 3.2.1 sites suddenly started having trouble
   with the tinymce editor and other weird JS related quirks, so I checked the error
   logs and found this:
 * Uncaught TypeError: Object [object Object] has no method ‘on’
 * referring to line 3 of the date.js file in the plugin:
 * $( ‘.rwmb-date’ ).on(
 * What the heck is going on? I’ve tried deactivating other plugins, reinstalling
   the meta script plugin, all to no avail… yet I’m not getting the error on other
   3.2.1 sites with the exact same plugin version.
 * Any insight would be greatly appreciated!!!
 * [http://wordpress.org/extend/plugins/meta-box/](http://wordpress.org/extend/plugins/meta-box/)

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Thread Starter [orionis23](https://wordpress.org/support/users/orionis23/)
 * (@orionis23)
 * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-meta-box-uncaught-typeerror-object-object-object-has-no-method-on/#post-2628977)
 * OK, so I see this change on the github page for the scripts date.js file made
   2months ago:
 *  move date/time from `.each()` to `.on()` as prep for cloning
 * I changed out version 4.1.1 for an older version, 4.0.2 which is all I happened
   to still have on hand and the problem is gone, the insert link thickbox of the
   tinymce editor once again works, but I’m stuck with some invading css from that
   older version of the script…
 * I also noticed that the other sites I have using the meta box script plugin that
   don;t have issues are not invoking the date picker, so that’s why I haven’t seen
   it on those sites…
 * Any ideas??
 *  Thread Starter [orionis23](https://wordpress.org/support/users/orionis23/)
 * (@orionis23)
 * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-meta-box-uncaught-typeerror-object-object-object-has-no-method-on/#post-2629025)
 * Think I got to the bottom of it… although I’m loading jquery on the front-end
   via the google cdn, the admin of WP 3.2.1 was still loading jquery 1.6. and the.
   on() event handler was added to the jquery api in 1.7…
 * I used this solution to switch out the admin’s jquery 1.6 for the most current
   version from google:
 * [http://wordpress.stackexchange.com/questions/3020/use-latest-jquery-in-wordpress-admin-interface](http://wordpress.stackexchange.com/questions/3020/use-latest-jquery-in-wordpress-admin-interface)
 * Side note: yes, there are reasons why the site is still 3.2.1 and not 3.3.1, 
   the owner is addicted to some plugins that are not yet working on 3.3…

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘[Plugin: Meta Box] Uncaught TypeError: Object [object Object] has no 
method 'on'’ is closed to new replies.

 * ![](https://ps.w.org/meta-box/assets/icon-128x128.png?rev=1100915)
 * [Meta Box](https://wordpress.org/plugins/meta-box/)
 * [Support Threads](https://wordpress.org/support/plugin/meta-box/)
 * [Active Topics](https://wordpress.org/support/plugin/meta-box/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/meta-box/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/meta-box/reviews/)

 * 2 replies
 * 1 participant
 * Last reply from: [orionis23](https://wordpress.org/support/users/orionis23/)
 * Last activity: [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-meta-box-uncaught-typeerror-object-object-object-has-no-method-on/#post-2629025)
 * Status: not resolved