[JS] FAQs Accordion with switching icon

$( document ).ready(function() {
    /*Accordion*/
    let icon = '<i class="fas fa-chevron-circle-down"></i>';

    $( ".faq-item .panel-title a" ).each(function() {
        let phead = $(this).html();
        $(this).html(phead+icon);

    });

    $('.collapse').on('shown.bs.collapse', function(){
    $(this).parent().find(".fas").removeClass("fa-chevron-circle-down").addClass("fa-chevron-circle-up");
    }).on('hidden.bs.collapse', function(){
    $(this).parent().find(".fas").removeClass("fa-chevron-circle-up").addClass("fa-chevron-circle-down");
    });

});