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

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 Edg/124.0.0.0
Chrome 124
Windows
Desktop
10 months ago
Test name Executions per second
.map(callback) - 1 000 elements 866734.9 Ops/sec
.fill(value) - 1 000 elements 806457.4 Ops/sec
.map(callback) - 10 000 elements 81425.1 Ops/sec
.fill(value) - 10 000 elements 81711.9 Ops/sec
.map(callback) - 100 000 elements 3553.9 Ops/sec
.fill(value) - 100 000 elements 3986.3 Ops/sec
Script Preparation code:
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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);