Run results for: shallow clone array

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 14_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 [FBAN/FBIOS;FBDV/iPhone8,1;FBMD/iPhone;FBSN/iOS;FBSV/14.5.1;FBSS/2;FBID/phone;FBLC/vi_VN;FBOP/5]

Browser: Mobile Safari 14

Operating system: iOS 14.5.1

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Splice	3791435.5 Ops/sec
Slice	22053738.0 Ops/sec
Concat	3695706.2 Ops/sec
Spread	168656960.0 Ops/sec
For-i	13432609.0 Ops/sec
For-of	7156066.5 Ops/sec
While	15189131.0 Ops/sec
From	2291228.8 Ops/sec
Lodash	2530901.8 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Tests:

Splice
const testArray = [1, 2, 3]; const newTestArray = testArray.splice(0);
Slice
const testArray = [1, 2, 3]; const newTestArray = testArray.slice();
Concat
const testArray = [1, 2, 3]; const newTestArray = testArray.concat();
Spread
const testArray = [1, 2, 3]; const newTestArray = [...testArray];
For-i
const testArray = [1, 2, 3]; const newTestArray = []; for (let i = 0; i < testArray.length; i++) { newTestArray[i] = testArray[i]; }
For-of
const testArray = [1, 2, 3]; const newTestArray = []; for (const value of testArray) { newTestArray[i] = value; }
While
const testArray = [1, 2, 3]; const newTestArray = []; let i = -1; while (++i < testArray.length) { newTestArray[i] = testArray[i]; }
From
const testArray = [1, 2, 3]; const newTestArray = Array.from(testArray);
Lodash
const testArray = [1, 2, 3]; const newTestArray = _.clone(testArray);

Run results for: shallow clone array

Splice

Slice

Concat

Spread

For-i

For-of

While

From

Lodash