Benchmark: Array.prototype.concat vs spread operator vs push spreaad operator

Tests:

Array.prototype.concat
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].concat(params);
spread operator
var params = [ "hello", true, 7 ] var other = [ 1, 2, ...params ]
spear push
var params = [ "hello", true, 7 ] var other = [ 1, 2].push(...params)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.prototype.concat
spread operator
spear push

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Browser/OS: Chrome 127 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Array.prototype.concat	16373690.0 Ops/sec
spread operator	58520080.0 Ops/sec
spear push	66715168.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and explain what's being tested.

**What's being tested:**

The benchmark is comparing three approaches for concatenating arrays in JavaScript:

1. `Array.prototype.concat()`
2. The spread operator (`...`)
3. `push` with spread operator (`...`)

These three approaches are compared to determine which one is the most efficient.

**Options compared:**

* **Traditional approach:** `Array.prototype.concat()`, which takes an array and another array as arguments and returns a new array containing all elements from both arrays.
* **Spread operator approach:** Using the spread operator (`...`) to concatenate two arrays. This creates a new array with elements from both arrays.
* **Push with spread operator approach:** Using `push` method in combination with the spread operator (`...`) to concatenate an array.

**Pros and Cons:**

* **Traditional approach (concat())**: Pros:
	+ Well-established and widely supported.
	+ Easy to understand for developers familiar with this method.
Cons:
	+ Creates a new array, which can lead to performance issues if arrays are large.
* **Spread operator approach:** Pros:
	+ More efficient than traditional approach (concat()) since it doesn't create a new array.
	+ Modern and widely adopted syntax.
Cons:
	+ May require more effort for developers who aren't familiar with this syntax.
* **Push with spread operator approach:** Pros:
	+ Similar performance to the spread operator approach.
	+ Allows for more flexibility in concatenation (e.g., adding elements at different indices).
Cons:
	+ Requires support for `push` method and spread operator (`...`) in older browsers.

**Library usage:**

None of the tested approaches require any libraries.

**Special JS features or syntax:**

The benchmark uses the spread operator (`...`) and `push` with spread operator (`...`), which are modern JavaScript features. The traditional approach (`Array.prototype.concat()`) is a well-established method, but it may not be as efficient as the other two approaches.

Related benchmarks:

Array.prototype.concat vs spread operator vs push spreaad operator (version: 0)

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

Comparing performance of: Array.prototype.concat vs spread operator vs spear push

Created: 8 months ago by: Guest

Jump to the latest result

Array.prototype.concat

spread operator

spear push

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):