save htmlcollection to object prevent redraw code example

Example 1: html collection of elements to array

const boxes = Array.from(document.getElementsByClassName('box'));

Example 2: html collection of elements to array

<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>

<script>
    const boxes = document.getElementsByClassName('box');
</script>