Run results for: Compare !array.length vs array.length === 0

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 121

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

!array.length

58K/s

arr.length === 0

53K/s

View exact numbers

Test name	Executions per second
✓ !array.length	57,875 Ops/sec
arr.length === 0	53,369 Ops/sec

Script Preparation code:

var arr = [];

Tests:

!array.length
if (!arr.length) { console.log(1); } else { console.log(0); }
arr.length === 0
if (arr.length === 0) { console.log(1); } else { console.log(0); }