Run results for: JQuery: find by id vs find by id and tag

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0

Browser: Firefox 78

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
find by id	2213616.0 Ops/sec
find by id and tag	136610.2 Ops/sec

HTML Preparation code:

<div id="test1">1</div>
<div id="test2">2</div>
<div id="test3">3</div>
<div id="test4">4</div>
<div id="test5">5</div>
<div id="test6">6</div>
<div id="test7">7</div>
<div id="test8">8</div>
<div id="test9">9</div>
<div id="test10">10</div>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js'></script>

Tests:

find by id
$("#test5");
find by id and tag
$("div#test5");

Run results for: JQuery: find by id vs find by id and tag

compare find dive element using JQuery

find by id

find by id and tag