Run results for: slice VS splice VS shift: who is the fastest to split array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36 OPR/82.0.4227.23

Browser: Opera 82

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
slice	1843061.9 Ops/sec
splice	2319413.8 Ops/sec

Script Preparation code:

var list = [];
for (var i = 0; i < 1000 * 1000; i++) {
  list.push(i);
}

Tests:

slice
list.push('slice'); let list2 = []; while (list.length) { list2.push(list.slice(1, 50)); list.splice(0, 50); }
splice
list.push('splice'); let list2 = []; while (list.length) { list2.push(list.splice(0, 50)); }