Title: Javascript Error in popup using backbone
Last modified: September 20, 2017

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# Javascript Error in popup using backbone

 *  Resolved [WPMU Dev – Paul Kevin](https://wordpress.org/support/users/paulkevini/)
 * (@paulkevini)
 * [8 years, 8 months ago](https://wordpress.org/support/topic/javascript-error-in-popup-using-backbone/)
 * Hello,
 * I am a developer at WPMU DEV using [WPMU Dev Hustle](https://wordpress.org/plugins/wordpress-popup/)
   and I noticed that most of the BackBone JS libs being used are old and there 
   are afew JS error that occur when I set the ninja forms shortcode in a pop up
   as per [this screenshot](https://www.dropbox.com/s/hpl5crw2sql27dh/ninja_forms_error.PNG?dl=0)
   I noticed the error is mainly at the code where form validation is being set 
   up and will only appear once I comment out the line in the JS that throws that
   error in Ninja Forms.
    Kindly assist in debugging this or in a way around this
   since most users integrating Ninja forms into the Hustle Popups cannot.
 * Warm Regards
    Paul Kevin

Viewing 1 replies (of 1 total)

 *  Plugin Contributor [Kyle B. Johnson](https://wordpress.org/support/users/kbjohnson90/)
 * (@kbjohnson90)
 * [8 years, 8 months ago](https://wordpress.org/support/topic/javascript-error-in-popup-using-backbone/#post-9513680)
 * Hello [@paulkevini](https://wordpress.org/support/users/paulkevini/),
 * We’d be happy to assist in troubleshooting this.
 * Can you open an issue on GitHub?
    [https://github.com/wpninjas/ninja-forms/issues/new](https://github.com/wpninjas/ninja-forms/issues/new)

Viewing 1 replies (of 1 total)

The topic ‘Javascript Error in popup using backbone’ is closed to new replies.

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## Tags

 * ["js error"](https://wordpress.org/support/topic-tag/js-error/)
 * [popup](https://wordpress.org/support/topic-tag/popup/)

 * 1 reply
 * 2 participants
 * Last reply from: [Kyle B. Johnson](https://wordpress.org/support/users/kbjohnson90/)
 * Last activity: [8 years, 8 months ago](https://wordpress.org/support/topic/javascript-error-in-popup-using-backbone/#post-9513680)
 * Status: resolved