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Object.create(null) vs Object literal
(version: 0)
Comparing performance of:
Object.create vs Object literal
Created:
4 years ago
by:
Guest
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Tests:
Object.create
const object = Object.create(null); object.a = 1; object.b = 2;
Object literal
const object = {a: 1, b: 2};
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Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
Object.create
Object literal
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
gemma2:9b
, generated one year ago):
This benchmark compares two methods of creating JavaScript objects: `Object.create(null)` and object literals (`{ a: 1, b: 2 }`). **Test Cases:** * **`Object.create()`**: Creates an object using the `Object.create()` method with `null` as the prototype. This ensures the new object has no inherited properties. Properties are then added to the object (`object.a = 1;`, `object.b = 2;`). * **`Object literal`**: Directly creates an object using curly braces and property assignments (`const object = { a: 1, b: 2 };`). **Pros & Cons:** * **`Object.create(null)`:** * **Pros:** Can be slightly faster in some cases due to optimized internal mechanisms. Creates objects with no prototype chain, which can be beneficial for performance when you don't need inheritance. * **Cons:** More verbose syntax compared to object literals. Requires understanding of prototypes and might not be as immediately intuitive for beginners. * **`Object literal`**: * **Pros:** Simpler, more readable syntax. More widely used and understood by developers. * **Cons:** Objects created with literals inherit from the default `Object.prototype`, which can sometimes introduce unexpected behavior if you want a completely independent object. Can be slightly slower than `Object.create(null)` in some scenarios. **Other Considerations:** * The benchmark's results primarily reflect execution speed, which is one factor but not the only one when choosing between these methods. Readability and maintainability are equally important. * The performance difference might vary depending on the browser, JavaScript engine, and specific code context. **Alternatives:** There aren't many direct alternatives to these two methods for creating plain objects in JavaScript. However, if you need more complex object structures with inheritance or pre-defined properties, consider using: * **Classes:** Introduced in ES6, classes provide a more structured way to define and create objects, including inheritance mechanisms. * **Object factories:** Functions that return new objects with specific configurations, promoting code reusability and flexibility.
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