Run results for: parseInt vs Number vs Number/Number.isInteger

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0

Browser: Firefox 139

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Basic with Number check

8.0M/s

Basic

7.9M/s

Basic with Number and isInteger check

7.1M/s

View exact numbers

Test name	Executions per second
✓ Basic with Number check	7,990,624 Ops/sec
Basic	7,868,356 Ops/sec
Basic with Number and isInteger check	7,102,244 Ops/sec

Script Preparation code:

var ids = ['678', '604%2C700', '780', '0', '        ', '123.8']
var someConstant = 200;

Tests:

Basic
var res = ids.filter((id) => Number(id) !== someConstant);
Basic with Number check
var res = ids.filter((id) => Number(id) && Number(id) !== someConstant);
Basic with Number and isInteger check
var res = ids.filter((id) => Number(id) && Number.isInteger(Number(id)) && Number(id) !== someConstant);