Run results for: string array join vs for loop concatenation

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0

Browser: Firefox 140

Operating system: Windows

Device Platform: Desktop

Date tested: 23 days ago

For loop

110K/s

join

109K/s

View exact numbers

Test name	Executions per second
✓ For loop	110,054 Ops/sec
join	109,202 Ops/sec

Script Preparation code:

var strings = Array(1000).fill('hola soy edu feliz navidad');

Tests:

For loop
let result = '' for(let i = 0; i < strings.length; i++) { result += strings[i] + '\n'; }
join
const result = strings.join('\n');