MeasureThat.net

Run results for: key exists: key in object vs !!object[key] vs object[key]

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Run details:
Mozilla/5.0 (Linux; Android 8.0.0; SM-G950U1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.80 Mobile Safari/537.36
Chrome Mobile 70
Android 8.0.0
Mobile
6 years ago
Test name Executions per second
key in object 1965422.4 Ops/sec
!!object[key] 2447303.5 Ops/sec
object[key] 2450138.0 Ops/sec
Script Preparation code:
Tests:

  • key in object

  • !!object[key]

  • object[key]

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