Run results for: Test length assign 100k

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36

Browser: Chrome 107

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
no var	2735.5 Ops/sec
use var	2498.8 Ops/sec

Script Preparation code:

var obj = Array.from({ length: 100000 }).map((value, i) => i).reduce((val, v) => { val[v] = v; return val; }, {})

Tests:

no var
const entries = Object.values(obj); for (let i = 0; i < entries.length; i++) { const v = entries[i]; }
use var
const entries = Object.values(obj); const len = entries.length; for (let i = 0; i < len; i++) { const v = entries[i]; }