Run results for: Remove an item from array; indexOf + splice vs filter

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:134.0) Gecko/20100101 Firefox/134.0

Browser: Firefox 134

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

filter

51.5M/s

indexOf + splice

14.7M/s

View exact numbers

Test name	Executions per second
✓ filter	51,480,848 Ops/sec
indexOf + splice	14,723,766 Ops/sec

Script Preparation code:

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

Tests:

indexOf + splice
var result = arr.splice(arr.indexOf(itemToRemove), 1)
filter
var result = arr.filter(el => el !== itemToRemove)