Benchmark: Array push vs spread operator 2

Tests:

Array.prototype.push
var arr = ['hello', true, 7]; arr.push(1);
spread operator
var arr = ['hello', true, 7]; arr = [...arr, 1];
Array.prototype.push multiple
var arr = ['hello', true, 7]; arr.push(1); arr.push(2); arr.push(3);
spread operator multiple
var arr = ['hello', true, 7]; arr = [...arr, 1, 2, 3];
Array.prototype.push.apply
var arr = ['hello', true, 7]; Array.prototype.push.apply(arr, [1, 2, 3]);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.prototype.push
spread operator
Array.prototype.push multiple
spread operator multiple
Array.prototype.push.apply

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36

Browser/OS: Chrome 103 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Array.prototype.push	52061640.0 Ops/sec
spread operator	29609108.0 Ops/sec
Array.prototype.push multiple	51852296.0 Ops/sec
spread operator multiple	26545592.0 Ops/sec
Array.prototype.push.apply	6247772.0 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):

LLMs can make mistakes. Check important info.

Measuring the performance of different JavaScript methods for adding elements to an array can be interesting.

**What is being tested?**

The benchmark tests four ways to add elements to an array:

1. `Array.prototype.push`: The traditional method of adding a single element to an array using the `push()` method.
2. Spread operator (`arr = [...arr, 1]`): A new ES6 feature that allows creating a new array by spreading the elements of an existing array and adding new elements.
3. `Array.prototype.push() multiple`: Adding multiple elements to an array using `push()`.
4. `Array.prototype.push.apply()`: Using the `apply()` method to add multiple elements to an array.

**Options compared**

The benchmark compares the performance of these four methods on an initial array with three elements (`['hello', true, 7']`). The tests aim to measure which method is faster and more efficient.

**Pros and cons of each approach:**

1. `Array.prototype.push`:
	* Pros: Widely supported, simple to use.
	* Cons: May be slower for large arrays due to the overhead of creating a new array object.
2. Spread operator (`arr = [...arr, 1]`):
	* Pros: Can add multiple elements at once, efficient for growing arrays.
	* Cons: Requires ES6 support and may be slower than `push()` for small arrays.
3. `Array.prototype.push() multiple`:
	* Pros: Simple to use, widely supported.
	* Cons: May be slower due to the overhead of creating multiple array object allocations.
4. `Array.prototype.push.apply()`:
	* Pros: Can add multiple elements at once, efficient for large arrays.
	* Cons: Less intuitive than other methods, may have performance variations depending on browser implementation.

**Library and purpose**

None mentioned in this benchmark definition.

No special JavaScript features or syntax are used in this benchmark.

**Other alternatives**

If you want to test more methods or explore alternative approaches, you can consider:

* Using a different data structure, such as an object or a Set.
* Testing the performance of other array methods, like `splice()`, `unshift()`, or `concat()`.
* Adding more elements to the initial array to increase the size and see how the performance changes.

Keep in mind that these alternatives will require additional benchmarking effort and consideration of potential factors affecting performance.

Related benchmarks:

Array push vs spread operator 2 (version: 1)

Compare the new ES6 spread operator with the traditional push() method

Comparing performance of: Array.prototype.push vs spread operator vs Array.prototype.push multiple vs spread operator multiple vs Array.prototype.push.apply

Created: 4 years ago by: Registered User

Jump to the latest result

Array.prototype.push

spread operator

Array.prototype.push multiple

spread operator multiple

Array.prototype.push.apply

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):