Benchmark: Various ways of object creation

HTML Preparation code:

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Script Preparation code:

/*your preparation JavaScript code goes here
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async function globalMeasureThatScriptPrepareFunction() {
    // This function is optional, feel free to remove it.
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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: 9 months 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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Test name	Executions per second
Object literals	95391768.0 Ops/sec
Object.create(null) and then set properties	12782467.0 Ops/sec
Object.create(null) with descriptors.	2097598.5 Ops/sec
new Object and then set properties	96637520.0 Ops/sec
Object literals then set prototype to null	9272074.0 Ops/sec

Related benchmarks:

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: 9 months ago by: Registered User

Jump 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