Run results for: JS loops comparison

Run details:

User agent: Mozilla/5.0 (Android 15; Mobile; rv:145.0) Gecko/145.0 Firefox/145.0

Browser: Firefox Mobile 145

Operating system: Android

Device Platform: Mobile

Date tested: 5 months ago

Script Preparation code:

var data = [...Array(10000).keys()]

Tests:

.map
const result = data.map(x => x + 1)
iterator loop
const result = []; for (const val of data) { result.push(val + 1); }
indexed loop (assign)
const result = new Array(data.length); for (let i = 0; i < data.length; i++) { result[i] = data[i] + 1; }
.forEach (assign)
const result = new Array(data.length); data.forEach((value, i) => result[i] = value + 1);
indexed loop (push)
const result = []; for (let i = 0; i < data.length; i++) { result.push(data[i] + 1); }
.forEach (push)
const result = []; data.forEach((value, i) => result.push(value + 1));