Run results for: Remove element from array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser: Chrome 104

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
filter (immutable)	21215.1 Ops/sec
indexOf and delete (will leave initial length of array) (mutable)	818544.0 Ops/sec
indexOf and splice (mutable)	7995691.0 Ops/sec
indexOf and slice and spread (immutable)	7092433.5 Ops/sec

Script Preparation code:

var arr = [];
for (var i = 0; i < 10000; i++) {
  arr.push(Math.floor(Math.random() * 1000) + 1)
}
arr.splice(5000, 0, 0)

Tests:

filter (immutable)
var tempResult = arr.filter(v => v !== 0);
indexOf and delete (will leave initial length of array) (mutable)
var index = arr.indexOf(0); delete arr[index]; var tempResult = arr;
indexOf and splice (mutable)
var index = arr.indexOf(0); arr.splice(index, 1); var tempResult = arr;
indexOf and slice and spread (immutable)
var index = arr.indexOf(0); var tempResult = [...arr.slice(0, index - 1), ...arr.slice(index+1)]