Benchmark: IndexOf vs Includes vs some

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var array = ['banana', 'sausage', 'jesus']

Tests:

IndexOf
array.indexOf('sausage') !== 1
Includes
array.includes('sausage')
some
array.some(elem => elem === 'sausage')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
IndexOf
Includes
some

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what is tested on it.

**Benchmark Definition**

The benchmark defines three test cases: `IndexOf`, `Includes`, and `some`. These test cases are designed to measure the performance of different approaches in JavaScript for searching an array. The test data consists of a predefined array `array` containing three strings: `'banana'`, `'sausage'`, and `'jesus'`.

**Options Compared**

The options compared in this benchmark are:

1. **IndexOf**: uses the `indexOf()` method to search for a specific element in the array.
2. **Includes**: uses the `includes()` method to check if an element is present in the array.
3. **some**: uses the `some()` method with a callback function to iterate through the array and check if any element matches the condition.

**Pros and Cons of Each Approach**

Here's a brief overview of each approach:

1. **IndexOf**:
	* Pros: Efficient for searching a specific element in the array.
	* Cons: Returns `-1` if the element is not found, which can lead to unnecessary computations.
2. **Includes**:
	* Pros: Returns `true` or `false` directly, making it easier to use in conditional statements.
	* Cons: May perform slower than `IndexOf` for large arrays due to its implementation.
3. **some**:
	* Pros: Allows for more flexible search criteria and can be useful when searching for a condition that doesn't necessarily have to return an index.
	* Cons: Can be slower than `IndexOf` or `Includes` because it iterates through the entire array.

**Library Usage**

In this benchmark, the `lodash.js` library is used. The purpose of this library is likely to provide a more efficient implementation of the `some()` method, allowing for faster execution times compared to the built-in JavaScript implementation.

**Special JS Feature or Syntax**

The benchmark doesn't explicitly mention any special JavaScript features or syntax. However, it does use modern JavaScript features like ES6 arrow functions and template literals in the script preparation code (`var array = ['banana', 'sausage', 'jesus']`).

**Other Alternatives**

If you're interested in exploring alternative approaches to this benchmark, here are a few options:

1. **Built-in `filter()` method**: You can use the `filter()` method with an arrow function to achieve similar results as the `some()` method.
2. **Regular expressions**: If you need to search for patterns in the array, regular expressions might be a suitable alternative.
3. **Custom implementation**: Depending on your specific requirements, you could implement a custom loop or algorithm to compare with the built-in methods.

Keep in mind that these alternatives may have different performance characteristics and trade-offs compared to using the built-in `IndexOf`, `Includes`, and `some` methods.

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0

Browser/OS: Firefox 86 on Windows

View result in a separate tab

Test name	Executions per second
IndexOf	73730616.0 Ops/sec
Includes	71763712.0 Ops/sec
some	49277248.0 Ops/sec

Related benchmarks:

IndexOf vs Includes vs some (version: 0)

Banana

Comparing performance of: IndexOf vs Includes vs some

Created: 3 years ago by: Guest

Jump to the latest result

IndexOf

Includes

some

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):