Benchmark: Some, Filter, indexOf.

Script Preparation code:

var array = [];

for (var i = 1; i < 10000; i++) {
  array.push(i);
}

Tests:

Array.some
var tempResult = array.some(v => v === 7000);
Array.filter
var tempResult = array.filter(v => v === 7000);
Array.indexOf
var tempResult = array.indexOf(7000) > -1;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.some
Array.filter
Array.indexOf

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):

LLMs can make mistakes. Check important info.

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

**Benchmark Overview**

The benchmark tests three different approaches to find an element in an array: `Array.some()`, `Array.filter()`, and `Array.indexOf()`.

**Options Compared**

Here are the options being compared:

1. **Array.some()**: This method returns `true` if at least one element of the array satisfies the provided condition. It's useful when you need to check if any element in an array meets a certain criterion.
2. **Array.filter()**: This method creates a new array with all elements that pass the test implemented by the provided function. It's useful when you need to create a new array with specific elements or criteria.
3. **Array.indexOf()**: This method returns the index of the first element in an array that matches the specified value, or -1 if no match is found. It's useful when you need to find a specific element in an array by its value.

**Pros and Cons**

Here are some pros and cons of each approach:

* **Array.some()**:
	+ Pros: Simple, easy to read, and understand.
	+ Cons: May be slower than other methods if the condition is complex or requires many iterations.
* **Array.filter()**:
	+ Pros: Creates a new array with specific elements, which can be useful for subsequent operations.
	+ Cons: May create unnecessary copies of the original array, which can lead to memory issues.
* **Array.indexOf()**:
	+ Pros: Fast and efficient when searching for a single element in an array.
	+ Cons: Returns -1 if no match is found, which may require additional checks.

**Library**

There is no library being used in this benchmark. The `array` variable is defined locally in the script preparation code.

**Special JS Features or Syntax**

None of the test cases use special JavaScript features or syntax that would affect their execution.

**Other Alternatives**

If you need to find an element in an array, other alternatives include:

* Using a traditional loop with indexing (e.g., `for (var i = 0; i < array.length; i++) { ... }`).
* Using the `Array.prototype.includes()` method (introduced in ES6), which returns a boolean indicating whether an element is present in the array.

Keep in mind that these alternatives may have different performance characteristics compared to the methods being tested in this benchmark.

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Android 10; Mobile; rv:87.0) Gecko/87.0 Firefox/87.0

Browser/OS: Firefox Mobile 87 on Android

View result in a separate tab

Test name	Executions per second
Array.some	15989.9 Ops/sec
Array.filter	9558.7 Ops/sec
Array.indexOf	42335.2 Ops/sec

Related benchmarks:

Some, Filter, indexOf. (version: 0)

Comparing performance of: Array.some vs Array.filter vs Array.indexOf

Created: 3 years ago by: Guest

Jump to the latest result

Array.some

Array.filter

Array.indexOf

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):