Run results for: Array concat vs spread operator vs push with more data

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0

Browser: Firefox 136

Operating system: Windows

Device Platform: Desktop

Date tested: one month ago

Script Preparation code:

var array1 = [...Array(1000).keys()]
var array2 = array1.map(i => i * 10)

AخA
 
var array1 = [...Array(1000).keys()]var array2 = array1.map(i => i * 10) 

Tests:

Array.prototype.concat
const result = array1.concat(array2);
const result = array1.concat(array2);
spread operator
const result = [ ...array1, ...array2 ]
const result = [ ...array1, ...array2 ]
Push
const result = array1.push(...array2);
const result = array1.push(...array2);