Run results for: Boolean constructor vs double negotiation trick in javascript

Run details:

User agent: Mozilla/5.0 (iPad; CPU OS 17_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/122.0.6261.89 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 122

Operating system: iOS 17.3

Device Platform: Tablet

Date tested: 2 years ago

Double negation trick

3.6M/s

Boolean

1.4M/s

View exact numbers

Test name	Executions per second
✓ Double negation trick	3,602,240 Ops/sec
Boolean	1,429,737 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