Benchmark: push spread vs push apply v4

Script Preparation code:

var arr = Array.from(Array(1).keys())

Tests:

push spread
var brr = [] brr.push(...arr)
push apply
var crr = [] crr.push.apply(crr, arr)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
push spread
push apply

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 JSON and benchmark preparation code to understand what is being tested.

**Benchmark Definition**

The benchmark definition represents the script that will be executed for each test case. There are two test cases:

1. `push spread`: The script uses the spread operator (`...`) to push all elements from an array `arr` into another empty array `brr`.
2. `push apply v4`: The script uses the `apply()` method to push all elements from the same array `arr` into another empty array `crr`.

**Script Preparation Code**

The script preparation code is used to set up the environment for each test case. In this case, it creates an array `arr` using the `Array.from()` and `Array.keys()` methods.

**Html Preparation Code**

There is no HTML preparation code provided, which suggests that the benchmark only focuses on JavaScript performance and does not involve any UI-related tests.

**Library Usage**

The test cases use the built-in JavaScript `push()` method, which is a part of the ECMAScript standard. There are no external libraries used in these examples.

**Special JS Feature or Syntax**

Neither of the test cases uses any special JavaScript features or syntax that would require additional explanation.

**Comparison of Approaches**

The two approaches being compared are:

1. `push spread`: Uses the spread operator (`...`) to push elements into an array.
2. `push apply v4`: Uses the `apply()` method with a variable number of arguments to push elements into an array.

**Pros and Cons of Each Approach**

Here's a brief summary of the pros and cons of each approach:

* `push spread`:
	+ Pros: More concise, readable, and efficient way to push elements into an array.
	+ Cons: May be slower than using `apply()` due to additional overhead from the spread operator.
* `push apply v4`:
	+ Pros: Can be used when working with older browsers that don't support the spread operator.
	+ Cons: Less readable and more verbose compared to `push spread`.

**Other Considerations**

The benchmark is likely designed to measure the performance difference between these two approaches in JavaScript. However, it's worth noting that the actual performance impact of using one approach over the other may be negligible in most cases.

**Alternatives**

There are alternative ways to push elements into an array in JavaScript, such as using a `for` loop or the `forEach()` method:

* Using a `for` loop:
```javascript
arr.forEach(element => {
  brr.push(element);
});
```
* Using the `forEach()` method:
```javascript
brr = [...arr];
```
However, these alternatives are not being compared in this benchmark.

Related benchmarks:

push spread vs push apply v4 (version: 3)

Comparing performance of: push spread vs push apply

Created: 2 years ago by: Registered User

Jump to the latest result

push spread

push apply

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):