Test case details

Preparation Code

<div id="hello" data-id="hello"> </div> <div class="bye" data-class="bye"> </div>

Test cases

Test #1

var $el = document.getElementById('hello');

Test #2

var $el = document.getElementsByClassName('bye');

Test #3

var $el = document.querySelectorAll('[data-id="hello"]');

Test #4

var $el = document.querySelector('[data-id="hello"]');