Title: WooCommerce JavaScript error TypeError: b.toUpperCase is not a function
Last modified: February 17, 2017

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# WooCommerce JavaScript error TypeError: b.toUpperCase is not a function

 *  [Bubelbub](https://wordpress.org/support/users/bubelbub/)
 * (@bubelbub)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/woocommerce-javascript-error-typeerror-b-touppercase-is-not-a-function/)
 * Hey guys,
 * I have a problem with adding shipping costs.
 * Script is:
    /wp-content/plugins/woocommerce/assets/js/admin/wc-shipping-zones.
   min.js
 * Content is:
    [https://jsfiddle.net/w2r3paok/](https://jsfiddle.net/w2r3paok/)
 * Installed plugins:
    – WooCommerce 2.6.14 – WooCommerce German Market 2.6.8 – 
   WooCommerce Google Analytics Integration 1.4.0 – WooCommerce Klarna Gateway 2.1.4–
   WooCommerce Multilingual 4.0.4 – WPML Multilingual CMS 3.6.3 – SOFORT Banking
   for WooCommerce 1.1.19
 * I don’t know why its not working. In debug mode it shows this in wc-shipping-
   zones.js.
 * ![](https://i0.wp.com/i.imgur.com/luXTkAn.png?ssl=1)
 * Do anyone know what the problem could be?

The topic ‘WooCommerce JavaScript error TypeError: b.toUpperCase is not a function’
is closed to new replies.

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## Tags

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

 * 0 replies
 * 1 participant
 * Last reply from: [Bubelbub](https://wordpress.org/support/users/bubelbub/)
 * Last activity: [9 years, 3 months ago](https://wordpress.org/support/topic/woocommerce-javascript-error-typeerror-b-touppercase-is-not-a-function/)
 * Status: not resolved