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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:120.0) Gecko/20100101 Firefox/120.0

Browser: Firefox 120

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Basic with Number check

5.4M/s

Basic

5.0M/s

Basic with Number and isInteger check

4.9M/s

View exact numbers

Test name	Executions per second
✓ Basic with Number check	5,402,242 Ops/sec
Basic	5,003,113 Ops/sec
Basic with Number and isInteger check	4,854,266 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);