By any chance if you are writing code in jQuery using keypress() event handler and everything is working good except the "backspace" button, in that case use the keyup() event handler as backspace do not work with keypress() event handler.
- Remove blank lines in Sublime Text 3
- Disable Archive feature of custom post type: WordPress
- Redirect to Checkout / custom page on Add to Cart button click – WooCommerce
- Add numbering pagination in Divi theme for blog posts?
- Add URL redirection or 301 Redirect through .htaccess file
- Hide Meta Tags in Divi Theme for blog posts
- Disable plugin updates in WordPress with hook
- How to get the Average rating in WooCommmerce shop page?