Benchmark: objects delete vs null vs undefined vs void 0 vs Object.create(null)

Tests:

null
var a = 999; for(var i = 0; i < 1000;i++) { const b = {a:null}; }
undefined
var a = 999; for(var i = 0; i < 1000;i++) { const b = {a: undefined}; }
Object.create(null)
var a = 999; for(var i = 0; i < 1000;i++) { const b = {a: Object.create(null)}; }
void 0
var a = 999; for(var i = 0; i < 1000;i++) { const b = {a: void 0}; }
delete
var a = 999; for(var i = 0; i < 1000;i++) { const b = {a: void 0}; delete b.a; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
null
undefined
Object.create(null)
void 0
delete

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser/OS: Chrome 136 on Windows

View result in a separate tab

null

5.0M/s

void 0

5.0M/s

undefined

1.7M/s

Object.create(null)

151K/s

delete

15K/s

View exact numbers

Test name	Executions per second
✓ null	5,007,848 Ops/sec
void 0	4,965,373 Ops/sec
undefined	1,674,188 Ops/sec
Object.create(null)	150,887 Ops/sec
delete	14,620 Ops/sec

objects delete vs null vs undefined vs void 0 vs Object.create(null) (version: 0)

delete vs null vs undefined vs void 0 vs Object.create(null)

Comparing performance of: `null vs undefined vs Object.create(null) vs void 0 vs delete`

Created: 2 years ago by: Guest

Go to the latest result

null

undefined

Object.create(null)

void 0

delete

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

objects delete vs null vs undefined vs void 0 vs Object.create(null) (version: 0)

delete vs null vs undefined vs void 0 vs Object.create(null)

Comparing performance of: null vs undefined vs Object.create(null) vs void 0 vs delete

Created: 2 years ago by: Guest

Go to the latest result

null

undefined

Object.create(null)

void 0

delete

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `null vs undefined vs Object.create(null) vs void 0 vs delete`