Benchmark: Various ways of object creation

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Script Preparation code:

/*your preparation JavaScript code goes here
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async function globalMeasureThatScriptPrepareFunction() {
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const store = {
    _: null
};

function do_not_optimize(v) {
    store._ = v;
}

Tests:

Object literals
let obj = { a: 0, b: 0, c: 0, d: 0 }; do_not_optimize(obj);
Object.create(null) and then set properties
let obj = Object.create(null); obj.a = 0; obj.b = 0; obj.c = 0; obj.d = 0; do_not_optimize(obj)
Object.create(null) with descriptors.
let obj = Object.create(null, { a: { value: 0, writable: true, enumerable: true, configurable: true }, b: { value: 0, writable: true, enumerable: true, configurable: true }, c: { value: 0, writable: true, enumerable: true, configurable: true }, d: { value: 0, writable: true, enumerable: true, configurable: true } }); do_not_optimize(obj);
new Object and then set properties
let obj = new Object(); obj.a = 0; obj.b = 0; obj.c = 0; obj.d = 0; do_not_optimize(obj);
Object literals then set prototype to null
let obj = { a: 0, b: 0, c: 0, d: 0 }; Object.setPrototypeOf(obj, null) do_not_optimize(obj);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object literals
Object.create(null) and then set properties
Object.create(null) with descriptors.
new Object and then set properties
Object literals then set prototype to null

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36 Edg/138.0.0.0

Browser/OS: Chrome 138 on Mac OS X 10.15.7

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new Object and then set properties

96.6M/s

Object literals

95.4M/s

Object.create(null) and then set properties

12.8M/s

Object literals then set prototype to null

9.3M/s

Object.create(null) with descriptors.

2.1M/s

View exact numbers

Test name	Executions per second
✓ new Object and then set properties	96,637,520 Ops/sec
Object literals	95,391,768 Ops/sec
Object.create(null) and then set properties	12,782,467 Ops/sec
Object literals then set prototype to null	9,272,074 Ops/sec
Object.create(null) with descriptors.	2,097,598 Ops/sec

Various ways of object creation (version: 1)

Comparing performance of: `Object literals vs Object.create(null) and then set properties vs Object.create(null) with descriptors. vs new Object and then set properties vs Object literals then set prototype to null`

Created: one year ago by: Registered User

Go to the latest result

Object literals

Object.create(null) and then set properties

Object.create(null) with descriptors.

new Object and then set properties

Object literals then set prototype to null

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Various ways of object creation (version: 1)

Comparing performance of: Object literals vs Object.create(null) and then set properties vs Object.create(null) with descriptors. vs new Object and then set properties vs Object literals then set prototype to null

Created: one year ago by: Registered User

Go to the latest result

Object literals

Object.create(null) and then set properties

Object.create(null) with descriptors.

new Object and then set properties

Object literals then set prototype to null

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Object literals vs Object.create(null) and then set properties vs Object.create(null) with descriptors. vs new Object and then set properties vs Object literals then set prototype to null`