Format billing phone number on WooCommerce checkout
问题 For the WooCommerce checkout billing field, how can I make this field require 9 numbers and insert dashes for proper phone formatting? For example, instead of typing out 3053453212 in the phone number field, it displays: (305-345-3212) 回答1: Based on "Formatting a phone number in a form using jquery" answer code, here is the way to format the Woocommerce billing phone: add_action('wp_footer', 'format_checkout_billing_phone'); function format_checkout_billing_phone() { if ( is_checkout() && !