height = document.getElementsByTagName("input")[0].value
bar = document.getElementsByClassName("bar")[0]
bar.style.height = height + 'px';
<div class="wrapper">
<div>item1</div>
<div>item2</div>
<div>item3</div>
<div>item4</div>
</div>
.wrapper {
column-count: 2;
}
toggle_pop-up
toggle_pop_up
.toggle("slide")
должно быть.slideToggle(9000)