JavaScript - Set event listener on dynamic elements: https://www.yudhistiramauris.com/how-to-add-javascript-event-listener-on-dynamic-elements/

setDynamicListener.js

/**
 * Set event listener on dynamic elements
 *
 * {@link https://www.yudhistiramauris.com/how-to-add-javascript-event-listener-on-dynamic-elements/}
 * 
 * @param {string}   type     Event name
 * @param {string}   selector CSS/JS selector
 * @param {Function} callback Function to execute upon event trigger
 */
function setDynamicListener( type, selector, callback ) {
    document.addEventListener( type, function( e ) {
        if ( e.target.matches( selector ) ) {
            var elements = this.querySelectorAll( selector );

            for ( var i = 0; i < elements.length; i++ ) {
                elements[i].addEventListener( type, callback( e ) );
            }
        }
    } );
}