Run results for: Compare comparison with null or undefined (extended) - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

typeof value === undefined

69.0M/s

value !== null

68.0M/s

typeof value == undefined

60.2M/s

value !== null && value !== undefined

56.6M/s

value !== undefined

56.5M/s

value != null

55.5M/s

value != undefined

55.1M/s

value === null || value === undefined

50.6M/s

value == null

49.1M/s

value === null

48.9M/s

value === undefined

48.7M/s

value == undefined

45.3M/s

!_.isNil(value)

39.4M/s

_.isNil(value)

31.5M/s

View exact numbers

Test name	Executions per second
✓ typeof value === undefined	69,044,944 Ops/sec
value !== null	68,018,184 Ops/sec
typeof value == undefined	60,191,120 Ops/sec
value !== null && value !== undefined	56,581,224 Ops/sec
value !== undefined	56,523,416 Ops/sec
value != null	55,522,096 Ops/sec
value != undefined	55,112,528 Ops/sec
value === null \|\| value === undefined	50,625,180 Ops/sec
value == null	49,055,716 Ops/sec
value === null	48,897,184 Ops/sec
value === undefined	48,652,780 Ops/sec
value == undefined	45,251,332 Ops/sec
!_.isNil(value)	39,406,608 Ops/sec
_.isNil(value)	31,545,992 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.min.js"></script>

Script Preparation code:

var value = { a: 123 }

Tests:

value == null
value == null
value == undefined
value == undefined
value === null
value === null
value === undefined
value === undefined
value === null || value === undefined
value === null || value === undefined
_.isNil(value)
_.isNil(value)
value != null
value != null
value != undefined
value != undefined
value !== null
value !== null
value !== undefined
value !== undefined
value !== null && value !== undefined
value !== null && value !== undefined
!_.isNil(value)
!_.isNil(value)
typeof value == undefined
typeof value == 'undefined'
typeof value === undefined
typeof value === 'undefined'