JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
  <div class="item" data-id="1"/>
  <div class="item" data-id="2"/>
  <div class="item" data-id="2"/>
  <div class="item" data-id="3"/>
</div>

JavaScript

console.log(document.querySelector("[data-id='2']"));