Вы можете вызвать событие click , проверив index текущего элемента:
.......
if ($next2.length) {
$('.slider-wrap2').animate({
scrollLeft: $next2.position().left
}, 200);
if($next2.index() <= 5) // check the index
$('#end').trigger('click'); // trigger the event
}
.......
Кроме того, не забудьте передать событие в функции обратного вызова:
$('#end').click(function(event) {
var n = $(".slider-slide-wrap").length,
width = 500,
newwidth = width * n;
var n = $(".slider-slide-wrap2").length,
width = 500,
newwidth = width * n;
$('.slide-wrap').css({
'width': newwidth
});
$('.slide-wrap2').css({
'width': newwidth
});
$(".slider-slide-wrap").each(function (i) {
var thiswid = 500;
$(this).css({
'left': thiswid * i
});
});
$(".slider-slide-wrap2").each(function (i) {
var thiswid = 500;
$(this).css({
'left': thiswid * i
});
});
$('.slider-wrap2').scroll(function () {
var scrollLeft = $(this).scrollLeft();
$(".slider-slide-wrap2").each(function (i) {
var posLeft = $(this).position().left
var w = $(this).width();
if (scrollLeft >= posLeft && scrollLeft < posLeft + w) {
$(this).addClass('shown').siblings().removeClass('shown');
}
});
});
$('#end').click(function(event) {
event.preventDefault();
var $next = $('.slide-wrap .shown').next();
var $next2 = $('.slide-wrap2 .shown').next();
var curr = $('.rundown-items .current').parent(); //find .current's parent
var $children = $('.rundown-items').children();
var firstcal = $children.length;
var actual = firstcal - 9;
$children.each(function (i) {
if (i < actual) {
$(this).addClass('scrollup')
}
});
setTimeout(function(){
if ($next.length) {
$('.slider-wrap').animate({
scrollLeft: $next.position().left
}, 0);
}
if ($next2.length) {
$('.slider-wrap2').animate({
scrollLeft: $next2.position().left
}, 200);
if($next2.index() <= 5)
$('#end').trigger('click');
}
if (curr.next().length > 0) {
$('.rundown-items').animate({scrollTop: '+=35px'}, 400);
curr.children('.current').contents().unwrap(); // remove .current
curr.next().wrapInner('<div class="current"></div>'); // add it to the next element
};
}, 150);
});
.slider-wrap2{position:relative;width:500px;height:60px;overflow-y:hidden;overflow-x:hidden;padding-top:5px;text-align:center;z-index:99999999999}
.slide-wrap2{position:relative;height:60px;top:0;left:0}
.slider-slide-wrap,.slider-slide-wrap2{position:absolute;width:500px;height:100%}
.shown .single {width:1024px;height:576px;overflow-y: scroll;overflow-x:hidden;padding:0 17px 0 0;box-sizing: content-box;margin:0}*/
.shown .single li{overflow-y: scroll;overflow-x:hidden;padding-right: 17px;box-sizing: content-box;}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button id="end">End</button>
<div class="slider-wrap2">
<div class="slide-wrap2">
<div class="slider-slide-wrap2 shown"></div>
<div class="slider-slide-wrap2">item 1</div>
<div class="slider-slide-wrap2">item 2</div>
<div class="slider-slide-wrap2">item 3</div>
<div class="slider-slide-wrap2">item 4</div>
<div class="slider-slide-wrap2">item 5</div>
</div>
</div>