Benchmark: array findindex vs any

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.core.js"></script>

Tests:

array findindex
var a = ['hello', 'a', 'bc', 'cc', 'ca']; var b = a.findIndex(item => item === 'zz');
array any
var a = ['hello', 'a', 'bc', 'cc', 'ca']; var b = a.some(item => item === 'zz');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array findindex
array any

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what's being tested, compared, and discussed.

**Benchmark Definition JSON**

The benchmark definition defines two test cases:

1. `array findindex`: This test case checks the performance of `Array.prototype.findIndex()` method in JavaScript.
2. `array any`: This test case checks the performance of `Array.prototype.some()` method in JavaScript.

**Options Compared**

Two options are compared here:

1. **`Array.prototype.findIndex()`**: This method returns the index of the first element in the array that satisfies the provided condition, or -1 if no elements satisfy the condition.
2. **`Array.prototype.some()`**: This method returns `true` if at least one element in the array satisfies the provided condition, and `false` otherwise.

**Pros and Cons**

Here are some pros and cons of each approach:

* **`Array.prototype.findIndex()`**:
	+ Pros: More explicit and controlled way to find an index. Can be more efficient for large arrays.
	+ Cons: Returns -1 if no elements satisfy the condition, which can lead to unnecessary computations if checking for its presence is necessary.
* **`Array.prototype.some()`**:
	+ Pros: Shorter code and easier to read. More suitable for cases where you want to check if at least one element satisfies the condition.
	+ Cons: May be slower than `findIndex()` for large arrays, since it needs to iterate over all elements.

**Library Used**

In this benchmark, Lodash is used as a dependency in the HTML preparation code. Specifically, `lodash.core.js` is included, which provides various utility functions for JavaScript development.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax mentioned in this benchmark. The code uses standard JavaScript syntax and libraries (Lodash).

**Other Alternatives**

If you're interested in alternative approaches to these methods:

* **`Array.prototype.indexOf()`**: Similar to `findIndex()`, but returns -1 instead of a value.
* **`Array.prototype.every()`**: Returns `true` if all elements satisfy the condition, and `false` otherwise. Not suitable for this benchmark.
* **`Array.prototype.includes()`**: A more recent addition to JavaScript (ECMAScript 2019), which provides a simpler way to check if an element is in the array.

These alternatives might be worth exploring depending on your specific use case and performance requirements.

In summary, this benchmark compares the performance of `Array.prototype.findIndex()` and `Array.prototype.some()` methods in JavaScript. The choice between these two approaches depends on whether you need more control over the index or a simpler way to check if at least one element satisfies the condition.

Latest run results:

Run details: (Test run date: 5 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 YaBrowser/24.4.0.0 Safari/537.36

Browser/OS: Yandex Browser 24 on Windows

View result in a separate tab

Test name	Executions per second
array findindex	102160416.0 Ops/sec
array any	98135104.0 Ops/sec

Related benchmarks:

array findindex vs any (version: 0)

if does not exists

Comparing performance of: array findindex vs array any

Created: one year ago by: Guest

Jump to the latest result

array findindex

array any

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):