Test case details

Preparation Code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script> <div id="id"></div>
var id, tag;

Test cases

Test #1

id  = $('#id'); tag = $('div');

Test #2

id  = $(document.getElementById('id')); tag = $(document.getElementsByTagName('div'));

Test #3

id  = document.getElementById('id'); tag = document.getElementsByTagName('div');