Run results for: Object.keys() allocation

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Execute once

2.2M/s

Execute everytime

26K/s

View exact numbers

Test name	Executions per second
✓ Execute once	2,227,125 Ops/sec
Execute everytime	26,182 Ops/sec

Script Preparation code:

var obj = {0: '1', 1: '2', 2: '3', 3: '4', 4: '5'};

Tests:

Execute everytime
for (let i = 0; i < 100; i++) { let a = Object.keys(obj); }
Execute once
let b = Object.keys(obj); for (let i = 0; i < 100; i++) { let a = b; }