Run results for: JQuery: selector for find by class

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36

Browser: Chrome 83

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
$("#main").find(".innerTest")	124211.9 Ops/sec
$(".innerTest")	151402.5 Ops/sec
$("#main").children(".innerTest")	74557.1 Ops/sec

HTML Preparation code:

<div class="test" id="main">
  <div class="innerTest"></div>
  <div class="innerTest"></div>
  <div class="innerTest"></div>
</div>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js'></script>

Tests:

$("#main").find(".innerTest")
$("#main").find(".innerTest");
$(".innerTest")
$(".innerTest");
$("#main").children(".innerTest")
$("#main").children(".innerTest");

Run results for: JQuery: selector for find by class

Test different approach for found by class

$("#main").find(".innerTest")

$(".innerTest")

$("#main").children(".innerTest")