Benchmark: Object.assign vs. creating new objects3

Tests:

Object.assign
let Program = {a: "test", b: "neu"} let vorlage = { program: Program, currentStepList: [], stepIndex: 0, stackBase: 0, callbackAfterFinished: null, exceptionInfoList: [] } let list = []; for(let i = 0; i < 10000; i++){ list.push(Object.assign({}, Program)); }
create objects
let Program = {a: "test", b: "neu"} let vorlage = { program: Program, currentStepList: [], stepIndex: 0, stackBase: 0, callbackAfterFinished: null, exceptionInfoList: [] } let list = []; for(let i = 0; i < 10000; i++){ list.push({ program: Program, currentStepList: [], stepIndex: 0, stackBase: 0, callbackAfterFinished: null, exceptionInfoList: [] } ); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object.assign
create objects

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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Let's break down the provided benchmark and explain what's being tested, compared, and the pros and cons of each approach.

**Benchmark Definition**

The benchmark is designed to compare two approaches for creating objects:

1. **Object.assign**: This method creates a new object by copying an existing object. It takes two arguments: the target object to be copied into, and the source object to be copied from.
2. **Creating new objects directly**: This approach involves creating a new object using the `new` keyword or the `{}` syntax.

**Options being compared**

The benchmark compares the performance of these two approaches:

* Object.assign
* Creating new objects directly (using `{}` syntax)

**Pros and Cons of each approach**

1. **Object.assign**
	* Pros:
		+ Faster performance, as it avoids the overhead of creating a new object.
		+ Can be more memory-efficient, especially when dealing with large amounts of data.
	* Cons:
		+ May not be suitable for all use cases, such as when creating a new object with specific properties that don't exist in the source object.
2. **Creating new objects directly**
	* Pros:
		+ More explicit and readable code, especially when dealing with complex object creations.
		+ Can be more maintainable, as the intent of creating a new object is clear.
	* Cons:
		+ May be slower performance compared to Object.assign, due to the overhead of creating a new object.

**Library used**

In this benchmark, no specific library is used. The script and HTML preparation codes are minimal and focused on creating the test data.

**Special JS feature or syntax**

There doesn't seem to be any special JavaScript features or syntax being tested in this benchmark. However, it's worth noting that some older browsers might have different behavior when using `Object.assign()` due to its introduction in ECMAScript 5 (ES5).

**Other alternatives**

Some alternative approaches to creating objects could include:

* Using the spread operator (`{...source}`) to create a new object from an existing one.
* Using libraries like Lodash or Underscore.js, which provide utility functions for working with objects and arrays.

It's worth noting that these alternative approaches might not be directly comparable to Object.assign() in terms of performance, as they often involve additional overhead due to the complexity of the library's implementation.

Related benchmarks:

Object.assign vs. creating new objects3 (version: 0)

Comparing performance of: Object.assign vs create objects

Created: 4 years ago by: Guest

Jump to the latest result

Object.assign

create objects

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):