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Run results for:
Boolean constructor vs double negotiation trick in javascript
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Run details:
User agent:
Mozilla/5.0 (iPad; CPU OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/116.0.5845.177 Mobile/15E148 Safari/604.1
Browser:
Chrome Mobile iOS 116
Operating system:
iOS 17.0
Device Platform:
Tablet
Date tested:
one year ago
Test name
Executions per second
Boolean
1401275.8 Ops/sec
Double negation trick
3526146.2 Ops/sec
Script Preparation code:
var bFalse = false; var sEmpty = ''; var sFilled = 'Foo'; var nZero = 0; var nOne = 1;
Tests:
Boolean
Boolean(bFalse) Boolean(sEmpty) Boolean(sFilled) Boolean(nZero) Boolean(nOne)
Double negation trick
!!bFalse !!sEmpty !!sFilled !!nZero !!nOne