MeasureThat.net

Run results for: Instanceof vs string comparison vs property checking vs constructor comparison

Measure the performance of instanceOf operator vs comparing a basic string type.

Go to the benchmark
Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36
Chrome 102
Windows
Desktop
2 years ago
Test name Executions per second
instanceof 6906467.0 Ops/sec
string type 14789300.0 Ops/sec
string type + undefined 6146148.0 Ops/sec
property 6082459.0 Ops/sec
constructor comparison 7105522.5 Ops/sec
HTML Preparation code:
Script Preparation code:
Tests:

  • instanceof

  • string type

  • string type + undefined

  • property

  • constructor comparison

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