querySelector vs getElementsByClassName

5 years ago
User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36
Test name Executions per second
querySelector 1186989.0 Ops/sec
getElementsByClassName 1010361.0 Ops/sec
HTML Preparation code:
Tests:
  • querySelector

  • getElementsByClassName

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