JSFiddle - React, Tailwind, and code Playground
HTML
<ul class="ol1">
<li>Text1</li>
<li>Text1</li>
<li>Text1</li>
<li>Text1</li>
<li>Text1</li>
<li>Text1</li>
<li>Text1</li>
<li>Text2</li>
<li>Text2</li>
</ul>
<ul class="ol2">
</ul>
CSS
.ol1{
height: 300px;
}
.ol2{
border: 1px solid red;
}
JavaScript
if ($('.ol1').height() > 200){
$('.ol2').append($('.ol1 li:gt(-6)'));
}