JSFiddle - React, Tailwind, and code Playground

by luka kupunia

HTML

<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box fwefwe"></div>
<div class="box"></div>
<div class="box"></div>
<button>remove</button>

CSS

.box {
  height: 20px;
  background: red;
}

JavaScript

var a = document.querySelectorAll('.box');
var b = document.querySelector('button');

b.addEventListener('click',function(){

	for( var i = 0 ; i < a.length ; i++){
  	
    a[i].classList.remove('fwefwe');
  
  }

	

})