binding will work with AJAX created DOM

10_AJAX_rebind_event.js

// Will not work after new DOM created on AJAX
$('.photo-options-hero').on('click', function() {
    $(this).closest('.gallery-item').addClass('hero').siblings().removeClass('hero');
});

// Will work after AJAX DOM Creation
$('body').on('click', '.photo-options-hero', function() {
	$(this).closest('.gallery-item').addClass('hero').siblings().removeClass('hero');
});