let hulk_flag = 0; $(document).on('click','.hulkapps_submit_cart',function(e){ if (hulk_flag == 0) { e.preventDefault(); var res = true; if (validate_options(window.hulkapps.product_id)) { $("[name^='properties']").each(function () { if ($(this).val() == '') { $(this).attr('disabled', true); } }); hulk_flag = 1; $('.hulkapps_submit_cart').click(); if (hulk_flag == 1) { $("[name^='properties']").each(function () { if ($(this).val() == '') { $(this).attr('disabled', false); } }); hulk_flag = 0; } }else{ } } });