MeasureThat.net

Run results for: Undefined testing

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.40 Safari/537.36
Chrome 67
Windows
Desktop
6 years ago
Test name Executions per second
typeof x === "undefined" 11720512.0 Ops/sec
x === undefined 3485459.2 Ops/sec
x == undefined 3405605.5 Ops/sec
x == null 11629264.0 Ops/sec
Script Preparation code:
Tests:

  • typeof x === "undefined"

  • x === undefined

  • x == undefined

  • x == null

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