Benchmark: Add new element to array: push vs destructuring (array.length of 9)

Tests:

spread operator
var params = [ "hello", true, 7, "hello", true, 7, "hello", true, 7 ] var other = [ ...params, 'new' ]
Push
var params = [ "hello", true, 7, "hello", true, 7, "hello", true, 7 ]; params.push('new');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spread operator
Push

Fastest: N/A

Slowest: N/A

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

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I'd be happy to explain what's being tested in the provided JSON and provide insights into the options compared, their pros and cons, and other considerations.

**Benchmark Definition**

The benchmark definition represents a specific JavaScript operation: adding a new element to an array using either the spread operator or the `push` method. The benchmark is designed to measure the performance of these two approaches on an array with 9 elements.

**Options Compared**

There are two options being compared:

1. **Spread Operator**: Using the spread operator (`...`) to add a new element to an array.
2. **Push Method**: Using the `push` method to add a new element to an array.

**Pros and Cons**

* **Spread Operator**:
	+ Pros: Can be more concise and expressive, especially when working with arrays or objects. It also preserves the original data structure, making it easier to debug.
	+ Cons: Can be slower than the `push` method because it involves creating a new array object and then spreading the contents of the original array into the new one.
* **Push Method**:
	+ Pros: Typically faster than the spread operator because it only increments the internal length of the array, without creating a new array object. It's also more memory-efficient.
	+ Cons: Can be less concise and less expressive, especially when working with arrays or objects.

**Library and Special JS Features**

There is no library being used in this benchmark. However, it's worth noting that the spread operator was introduced in ECMAScript 2015 (ES6) and has since become a standard feature in modern JavaScript engines.

**Other Considerations**

When choosing between the spread operator and the `push` method, consider the following factors:

* **Code Readability**: If you're working on code that needs to be readable by others or by yourself in the future, using the spread operator can make your code more concise and expressive.
* **Performance**: If you need optimal performance, using the `push` method might be a better choice.
* **Memory Efficiency**: If memory usage is critical, using the `push` method will be more efficient than creating a new array object with the spread operator.

**Other Alternatives**

If you're looking for alternative approaches to adding elements to an array, consider:

* Using the `concat()` method: This method creates a new array by concatenating the original array with the new element. While it's not as concise as the spread operator or the `push` method, it can be useful in certain situations.
* Using `Array.prototype.set()`: Some JavaScript engines support the `set()` method on arrays, which allows you to add a new element without creating a new array object. However, this feature is still experimental and not widely supported.

Overall, the choice between the spread operator and the `push` method depends on your specific needs, preferences, and performance requirements.

Related benchmarks:

Add new element to array: push vs destructuring (array.length of 9) (version: 0)

Comparing performance of: spread operator vs Push

Created: 4 years ago by: Guest

Jump to the latest result

spread operator

Push

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):