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Run results for:
const vs let vs var (fixed)
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Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=564977" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0
Browser:
Firefox 132
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
let
18.7M/s
const
18.6M/s
var
17.2M/s
View exact numbers
Test name
Executions per second
✓
let
18,655,800 Ops/sec
const
18,575,862 Ops/sec
var
17,220,616 Ops/sec
Tests:
var
var g = { e: [] } g.o = function(x) { g.e.push(...[1,2,3]) } g.o()
let
let g = { e: [] } g.o = function(x) { g.e.push(...[1,2,3]) } g.o()
const
const g = { e: [] } g.o = function(x) { g.e.push(...[1,2,3]) } g.o()