Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.36
Chrome 84
Mac OS X 10.15.5
Desktop
4 years ago
Test name Executions per second
Native findIndex 12229198.0 Ops/sec
_.findIndex 3767805.0 Ops/sec
HTML Preparation code:
AخA
 
1
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
x
 
var users = [
  { 'user': 'joey',  'age': 28 },
  { 'user': 'ross',    'age': 31 },
  { 'user': 'chandler', 'age': 30 },
  { 'user': 'jessika', 'age': 21 },
  { 'user': 'amanda', 'age': 17 }
]
Tests:
  • Native findIndex

     
    users.findIndex(u => u.age === 30)
  • _.findIndex

     
    _.findIndex(users, u => u.age === 30)