Run results for: Array construct vs array push vs array concat

Run details:

User agent: Mozilla/5.0 (Android 10; Mobile; rv:138.0) Gecko/138.0 Firefox/138.0

Browser: Firefox Mobile 138

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

array push

105K/s

array concat

647/s

array construct

84/s

View exact numbers

Tests:

array construct
let a = []; for(let i=0; i <= 1000; i=i+1) { a = [...a, i ]; };
array push
const a = []; for(let i=0; i <= 1000; i = i + 1) { a.push(i); };
array concat
let a = []; for(let i=0; i <= 1000; i = i + 1) { a = a.concat([i]); };