Benchmark: Push vs Spread operator 1234

Tests:

Push
var params = [ "hello", true, 7 ] var other = params.push(...params)
Spread
var params = [ "hello", true, 7 ] var other = [ ...params, ...params ]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Push
Spread

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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I'd be happy to help you understand the JavaScript microbenchmark on MeasureThat.net.

**What is tested?**

The benchmark tests the performance difference between using the `push` method and the spread operator (`...`) when adding multiple elements to an array in JavaScript. Specifically, it checks which approach is faster for a given input array `[ "hello", true, 7 ]`.

**Options compared:**

There are two options being compared:

1. **Push**: Using the `push` method to add multiple elements to an array.
2. **Spread**: Using the spread operator (`...`) to add multiple elements to an array.

**Pros and Cons of each approach:**

* **Push**:
	+ Pros:
		- Simple and straightforward syntax.
		- Works with arrays of any size.
	+ Cons:
		- May be slower for large arrays due to the overhead of repeated `push` calls.
		- May lead to more memory allocation, as a new array is created each time.
* **Spread**:
	+ Pros:
		- Often faster for large arrays, as it avoids repeated `push` calls and creates a new array in one step.
		- More concise syntax compared to using multiple `push` calls.
	+ Cons:
		- Requires modern JavaScript support (ES6+).
		- May not be supported by older browsers or environments.

**Library used:**

None, as this is a basic microbenchmarking test that doesn't rely on any external libraries.

**Special JS feature or syntax:**

No special features or syntax are being tested in this benchmark. It's focused solely on the performance difference between two common array manipulation techniques.

**Other alternatives:**

There are other ways to add multiple elements to an array, such as using `concat`:

```javascript
var params = [ "hello", true, 7 ];
var other = params.concat(params);
```

However, this approach is not being tested in the benchmark, as it's less concise and may have different performance characteristics compared to the spread operator.

In general, when working with arrays in JavaScript, you should consider using the spread operator (`...`) for its potential performance benefits, especially for large arrays. However, be mindful of browser support and older environments that may not support this syntax.

Related benchmarks:

Push vs Spread operator 1234 (version: 0)

Comparing performance of: Push vs Spread

Created: 5 years ago by: Guest

Jump to the latest result

Push

Spread

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):