Run results for: Multiple shift versus Index

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Browser: Firefox 128

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Splice

37.9M/s

Shift

3.2M/s

Move Indexes

679K/s

View exact numbers

Test name	Executions per second
✓ Splice	37,931,484 Ops/sec
Shift	3,159,371 Ops/sec
Move Indexes	678,783 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

const list = new Array(1000).fill("value");
const list2 = new Array(1000).fill("value");
const list3 = new Array(1000).fill("value");
const list4 = new Array(1000).fill("value");

Tests:

Move Indexes
let i = 100; while (i < 1000) { list[i - 100] = list[i]; i++; } list.length = 900;
Shift
let i = 0; while (i < 100) { list2.shift(); i++; }
Splice
list3.splice(0, 100);
Slice
list4.slice(100);

Run results for: Multiple shift versus Index

Move Indexes

Shift

Splice

Slice