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object create null
(version: 0)
Comparing performance of:
object create null vs object vs new
Created:
9 years ago
by:
Guest
Go to the latest result
Tests:
object create null
var a; for (i = 0; i < 10000; i++) a = Object.create(null)
object
var a; for (i = 0; i < 10000; i++) a = {}
new
var a; for (i = 0; i < 10000; i++) a = new Object();
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
object create null
object
new
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
3 months ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:149.0) Gecko/20100101 Firefox/149.0
Browser/OS:
Firefox 149 on Windows
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<iframe src="https://measurethat.net/Embed?id=627782" width="100%" height="500px"></iframe>
object
42K/s
new
42K/s
object create null
41K/s
View exact numbers
Test name
Executions per second
✓
object
41,930 Ops/sec
new
41,757 Ops/sec
object create null
40,818 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and its results. **Benchmark Definition** The benchmark definition is a JSON object that provides metadata for the test case. It has three properties: * `Name`: The name of the benchmark, which in this case is "object create null". * `Description`: An empty string, indicating that there is no description provided. * `Script Preparation Code` and `Html Preparation Code`: Empty strings, indicating that no code needs to be executed before running the benchmark. **Test Cases** The test cases are individual scripts that are run as part of the benchmark. There are three test cases: 1. `object create null`: This test case creates a new object using the `Object.create(null)` method, which returns an empty object without any prototype. 2. `object`: This test case creates a new object using the `{}` syntax, which creates an empty object with no prototype. 3. `new`: This test case creates a new object using the `new Object()` syntax, which creates a new instance of the `Object` constructor. **Options Compared** The benchmark is comparing three different approaches to creating an object: * `object create null` * `object` (using `{}`) * `new` (using `new Object()`) Each approach has its own pros and cons: * `object create null`: This method creates an empty object without any prototype, which can be faster than the other two methods. However, it may not work as expected in some cases where the object needs to inherit properties from a parent object. * `object` (using `{}`): This method is the most concise way to create an empty object, but it may be slower than `object create null`. * `new` (using `new Object()`): This method creates a new instance of the `Object` constructor, which can be slower than the other two methods. **Library and Special JS Features** There are no libraries or special JavaScript features used in this benchmark. The test cases only use basic syntax for creating objects. **Other Considerations** When measuring the performance of object creation, it's also important to consider factors such as: * Garbage collection: Object creation can trigger garbage collection, which can impact performance. * Memory allocation: Creating a new object requires memory allocation, which can be slow in some cases. **Alternatives** There are other alternatives for creating objects in JavaScript, including: * Using the `ObjectLiteral` syntax (e.g. `let obj = { foo: 'bar' };`) * Using a constructor function (e.g. `function Obj() {} let obj = new Obj();`) * Using a class expression (e.g. `class Obj { } let obj = new Obj();`) However, these alternatives may not be relevant to this specific benchmark, which is focused on the performance of object creation using different methods.
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