Benchmark: selector test - MeasureThat.net

HTML Preparation code:

<section><div class="basic"></div></section>

Tests:

querySelector
document.querySelector('section:first-child .basic');
getElementsByTagName
document.getElementsByTagName('section').item(0).getElementsByClassName('.basic').item(0)

Rendered benchmark preparation results:

Previous results

Test case name	Result
querySelector
getElementsByTagName

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Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:67.0) Gecko/20100101 Firefox/67.0

Browser/OS: Firefox 67 on Windows 8.1

Test name	Executions per second
querySelector	1460974.0 Ops/sec
getElementsByTagName	1443545.0 Ops/sec

selector test (version: 0)