Stop iframe from playing

I want to stop iframe from playing when the ‘show’ class is removed from its parent div class.

So, I added code below to script and It works fine.
$(‘iframe’).attr(‘src’, $(‘iframe’).attr(‘src’));
But, the rest of the iframe players are disappeared.

$( document ).ready(function() {
$(‘.btnwrapper a’).on(‘click’, function () {
var eq = $(this).index();

$(‘.playerwrapper .player’).removeClass(‘show’);
$(‘.playerwrapper .player’).eq(eq).addClass(‘show’);
$(‘iframe’).attr(‘src’, $(‘iframe’).attr(‘src’));
});
});

webpage: https://www.chinadebate.com/iframe
read only link: Webflow - CHINADebate

Thank you so much, in advance, for help.