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Run results for:
for vs. for-of vs. join vs. reduce (concat strings)
Join an array of strings into one string.
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=523640" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; rv:109.0) Gecko/20100101 Firefox/115.0
Browser:
Firefox 115
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Benchmark engine:
Benchmark.js
for loop
1.7M/s
reduce
1.3M/s
for-of loop
834K/s
join
211K/s
View exact numbers
Test name
Executions per second
✓
for loop
1,743,103 Ops/sec
reduce
1,255,835 Ops/sec
for-of loop
834,492 Ops/sec
join
210,719 Ops/sec
Script Preparation code:
var strings = Array(100).fill("savemyhomeinthe(jungle|polar|ocean|desert)")
Tests:
for loop
let result = "" for (let i = 0; i < strings.length; i++) { result += strings[i] }
for-of loop
let result = "" for (const string of strings) { result += string }
join
const result = strings.join("")
reduce
const result = strings.reduce((a, b) => a + b, "")