jdmgarcia

//http://epsiloncool.ru/programmirovanie/preventing-multiple-submits-in-contact-form-7
jQuery(document).on('click', '.wpcf7-submit', function(e){
     if( jQuery('.ajax-loader').hasClass('is-active') ) {
          e.preventDefault();
          return false;
     }
});

jdmgarcia

<?php
/**
 * Add schema to yoast seo breadcrumb
 */

add_filter('wpseo_breadcrumb_links', 'jj_add_crumb_schema', 10, 1);

function jj_add_crumb_schema($crumbs) {

    if ( ! is_array( $crumbs ) || $crumbs === array() ) {

jdmgarcia

Two way iframe communication

The main difference between the two pages is the method of sending messages. Recieving messages is the same in both.

Parent

Send messages to iframe using iframeEl.contentWindow.postMessage Recieve messages using window.addEventListener('message')

iframe