Run results for: Lodash: differenceBy vs filter & find

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36 Edg/126.0.0.0

Browser: Chrome 126

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Lodash differenceBy

1.4M/s

javascript filter and find

1.0M/s

View exact numbers

Test name	Executions per second
✓ Lodash differenceBy	1,354,320 Ops/sec
javascript filter and find	1,041,939 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Script Preparation code:

var fullArray = [
  {
    title: 'full arr 1',
    value: '1',
  },
  {
    title: 'full arr 2',    
    value: '2',
  },
  {
    title: 'full arr 3',    
    value: '3',
  }
]
var partialArray = [
  {
    id: 1,
  },
  {
    id: 3,
  }
]

Tests:

Lodash differenceBy
_.differenceBy( fullArray, partialArray.map(v => ({ value: String(v.id) })), 'value', )
javascript filter and find
fullArray.filter(full => !partialArray.find(par => String(par.id) === full.value))

Run results for: Lodash: differenceBy vs filter & find

Comparing performance of: lodash differenceBy with javascript filter and find

Lodash differenceBy

javascript filter and find