Run results for: set array index: slice vs Object.assign vs slice concacct vs slice and set

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser: Chrome 116

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 8 months ago

Tests:

splice
var index = 2; var array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; var output = [ ...array.slice(0, index), 10, ...array.slice(index + 1) ];
Object.assign
var array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; var output = Object.assign([], array, {2: 10});
concat
var index = 2; var array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; var output = array.slice(0, index).concat(10, array.slice(index + 1))
slice and set
var index = 2; var array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; const temp = array.slice(0) temp[index] = 10 var output = temp