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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36 Edg/132.0.0.0

Browser: Chrome 132

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

arr.length === 0

157K/s

!array.length

155K/s

View exact numbers

Test name	Executions per second
✓ arr.length === 0	157,399 Ops/sec
!array.length	155,164 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); }