JSFiddle - React, Tailwind, and code Playground

HTML

<div class="prefImg"></div>
<div class="prefImg"></div>
<div class="prefImg"></div>
<div class="prefImg"></div>

JavaScript

var divsList = new Array();
        divsList = document.querySelectorAll(".prefImg");
        var x = divsList.length;
        console.log(x)
        var i = 0;
        for(i=0; i<divsList.length; i++) {
            
        }