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 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Safari/605.1.15
Safari 17
Mac OS X 10.15.7
Desktop
2 months ago
Test name Executions per second
instanceof 5225775.5 Ops/sec
string type 12653157.0 Ops/sec
string type + undefined 4438222.5 Ops/sec
property 4440922.0 Ops/sec
constructor comparison 5222070.0 Ops/sec
HTML Preparation code:
Script Preparation code:
Tests:

  • instanceof

  • string type

  • string type + undefined

  • property

  • constructor comparison

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