MeasureThat.net

Run results for: .startsWith() vs .test() vs .match() vs .indexOf()

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36
Chrome 102
Mac OS X 10.15.7
Desktop
2 years ago
Test name Executions per second
regexp .test() 8510528.0 Ops/sec
string .match() 7079432.0 Ops/sec
indexOf === 0 23153570.0 Ops/sec
string .startsWith() 16000066.0 Ops/sec
Script Preparation code:
Tests:

  • regexp .test()

  • string .match()

  • indexOf === 0

  • string .startsWith()