Benchmark: javascript var vs let vs const

Tests:

var
(function () { var arr = [55, 21, 807, 41, 56, 66, 202]; var num = 4; var str = "Lorem ipsum"; var bool = true; var nil = null; console.log(arr, num, str, bool, nil); })();
let
(function () { let arr = [55, 21, 807, 41, 56, 66, 202]; let num = 4; let str = "Lorem ipsum"; let bool = true; let nil = null; console.log(arr, num, str, bool, nil); })();
const
(function () { const arr = [55, 21, 807, 41, 56, 66, 202]; const num = 4; const str = "Lorem ipsum"; const bool = true; const nil = null; console.log(arr, num, str, bool, nil); })();

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:97.0) Gecko/20100101 Firefox/97.0

Browser/OS: Firefox 97 on Windows

javascript var vs let vs const (version: 0)