WooCommerce. Checkout form - prevent submit on Enter key pressed.

woo_prevent_submit_on_keypress.php

<?php
add_action( 'wp_footer', 'woo_prevent_submit_on_keypress' );
function woo_prevent_submit_on_keypress() {
  ob_start();?>
  <script>
    jQuery(function($){
      $('form.woocommerce-checkout input').keydown(function (e) {
       if (e. keyCode == 13) {
        e.preventDefault();

        var tab = $(e.target).attr("tabindex") + 1;
        $("input[tabindex=" + tab + "]").focus();
        return false;
       }
     });
    });
  </script>
  <?php
    ob_end_flush();
}