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Run results for: document.querySelectorAll (from document) vs parent.querySelectorAll (from an element)

Comparing speed of that on a large sample HTML document.

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Firefox/102.0
Firefox 102
Mac OS X 10.15
Desktop
one year ago
Test name Executions per second
document.querySelectorAll 39129.4 Ops/sec
parent.querySelectorAll 4051292.0 Ops/sec
Website performance monitoring
HTML Preparation code:
Script Preparation code:
Tests:

  • document.querySelectorAll

  • parent.querySelectorAll