Benchmark: Test length assign 1000

Script Preparation code:

var obj = Array.from({ length: 1000 }).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]; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
no var
use var

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Latest run results:

Run details: (Test run date: one year ago)

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/OS: Chrome 107 on Windows

Test name	Executions per second
no var	441891.2 Ops/sec
use var	439295.0 Ops/sec

Test length assign 1000 (version: 0)