Run results for: fill array with value: map(callback) vs fill(value)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.2 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

.fill(value) - 1 000 elements

1.0M/s

.fill(value) - 10 000 elements

159K/s

.map(callback) - 1 000 elements

65K/s

.fill(value) - 100 000 elements

15K/s

.map(callback) - 10 000 elements

7K/s

.map(callback) - 100 000 elements

662/s

View exact numbers

Test name	Executions per second
✓ .fill(value) - 1 000 elements	1,000,816 Ops/sec
.fill(value) - 10 000 elements	158,759 Ops/sec
.map(callback) - 1 000 elements	65,179 Ops/sec
.fill(value) - 100 000 elements	15,451 Ops/sec
.map(callback) - 10 000 elements	6,635 Ops/sec
.map(callback) - 100 000 elements	662 Ops/sec

Script Preparation code:

var array1000 = (new Array(1000)).map((e, i) => ({a: i, b: i, c: i, d: i, e: i, f: i, g: i, test: 'object'+ i}));
var array10000 = (new Array(10000)).map((e, i) => ({a: i, b: i, c: i, d: i, e: i, f: i, g: i, test: 'object'+ i}));
var array100000 = (new Array(100000)).map((e, i) => ({a: i, b: i, c: i, d: i, e: i, f: i, g: i, test: 'object'+ i}));

Tests:

.map(callback) - 1 000 elements
const result = array1000.map(() => true);
.fill(value) - 1 000 elements
const result = new Array(array1000.length).fill(true);
.map(callback) - 10 000 elements
const result = array10000.map(() => true);
.fill(value) - 10 000 elements
const result = new Array(array10000.length).fill(true);
.map(callback) - 100 000 elements
const result = array100000.map(() => true);
.fill(value) - 100 000 elements
const result = new Array(array100000.length).fill(true);