Title: [Plugin: Ninja Forms Lite] Java script error on submit
Last modified: August 20, 2016

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# [Plugin: Ninja Forms Lite] Java script error on submit

 *  Resolved [Greenweb](https://wordpress.org/support/users/greenweb/)
 * (@greenweb)
 * [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-ninja-forms-lite-java-script-error-on-submit/)
 * Error: $(“#ninja_form_overlay”).prop is not a function
    Source File: /wp-content/
   plugins/ninja-forms/js/min/ninja_forms_display.min.js?ver=3.3.1 Line: 5
 * [http://wordpress.org/extend/plugins/ninja-forms/](http://wordpress.org/extend/plugins/ninja-forms/)

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Author [Kevin Stover](https://wordpress.org/support/users/kstover/)
 * (@kstover)
 * [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-ninja-forms-lite-java-script-error-on-submit/#post-2528817)
 * This error is caused when Ninja Forms thinks that you are using version 1.7 of
   jQuery (the version packaged with WordPress 3.3) This usually occurs when you
   are using version 3.3 or later of WP, but have a plugin or a theme that includes
   an earlier version of jQuery. Unfortunately, if these plugins or themes don’t
   use enqueue properly, or don’t list the version of jQuery they are using, Ninja
   Forms doesn’t know which jQuery version your site is using.
 * I have plans to fix this in coming versions of Ninja Forms, but you can fix it
   manually by editing the `ninja-forms/includes/scripts_functions.php`. You’ll 
   need to modify two lines of the code: 68 and 117.
 * Line 68 should currently read: `NINJA_FORMS_URL .'/js/min/ninja_forms_admin.min.
   js',`
 * Change that to: `NINJA_FORMS_URL .'/js/min/ninja_forms_admin_3.1.min.js',`
 * Line 117 should currently read: `NINJA_FORMS_URL .'/js/min/ninja_forms_display.
   min.js',`
 * Change that line to: `NINJA_FORMS_URL .'/js/min/ninja_forms_display_3.1.min.js',`
 * After you make those changes, upload the file and it should work normally. Again,
   in future versions I will fix this problem, but hopefully this will work in the
   interim.
 * Hope that helps!
 * – Kevin
 *  Thread Starter [Greenweb](https://wordpress.org/support/users/greenweb/)
 * (@greenweb)
 * [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-ninja-forms-lite-java-script-error-on-submit/#post-2528820)
 * Fixed it – the theme was loading an outdated version of jQuery. Removed that 
   and it works perfectly.
 * Thanks for the great plugin 5 stars guys!
 *  Thread Starter [Greenweb](https://wordpress.org/support/users/greenweb/)
 * (@greenweb)
 * [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-ninja-forms-lite-java-script-error-on-submit/#post-2528821)
 * Thanks Kevin did not see your post I must have been typing at the same time as
   you.
 *  Plugin Author [Kevin Stover](https://wordpress.org/support/users/kstover/)
 * (@kstover)
 * [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-ninja-forms-lite-java-script-error-on-submit/#post-2528822)
 * No problem! I’m glad it’s working well for you. If you have any other issues,
   feel free to post about it, we’re trying to get all the bugs worked out.
 * – Kevin

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘[Plugin: Ninja Forms Lite] Java script error on submit’ is closed to 
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 * ![](https://ps.w.org/ninja-forms/assets/icon-256x256.png?rev=1649747)
 * [Ninja Forms - The Contact Form Builder That Grows With You](https://wordpress.org/plugins/ninja-forms/)
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 * 4 replies
 * 2 participants
 * Last reply from: [Kevin Stover](https://wordpress.org/support/users/kstover/)
 * Last activity: [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-ninja-forms-lite-java-script-error-on-submit/#post-2528822)
 * Status: resolved