Benchmark: IndexOf vs Includes vs lodash includes numbers

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 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99]

Tests:

IndexOf
array.indexOf(9)
Includes
array.includes(9)
lodash
_.includes(array, 9)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
IndexOf
Includes
lodash

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

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

**Benchmark Overview**

The benchmark compares three different approaches to check if an element exists in an array:

1. `Array.indexOf()`
2. `Array.includes()`
3. `_` (using Lodash)

**Options Compared**

The options are compared in terms of their execution speed, measured in executions per second.

* `indexOf()` and `includes()` are built-in methods in JavaScript arrays.
* `_` is a function from the Lodash library, which provides a more comprehensive set of utility functions.

**Pros and Cons of Each Approach**

1. **Array.indexOf()**:
	* Pros: Fast, lightweight, and widely supported.
	* Cons: May not be as readable or expressive as other approaches, as it returns -1 for non-existent elements.
2. **Array.includes()**:
	* Pros: More readable than `indexOf()` in terms of intention (it explicitly states "does this element exist?").
	* Cons: May have slightly worse performance compared to `indexOf()`.
3. **Lodash's `_` function**:
	* Pros: Provides a more comprehensive set of utility functions, making it a good choice for complex operations.
	* Cons: Adds an extra dependency (the Lodash library) and may be overkill for simple array checks.

**Library Description**

The Lodash library is a popular JavaScript utility library that provides a wide range of functions for tasks like:

* Array manipulation
* String manipulation
* Object manipulation
* Functional programming helpers

In this benchmark, the `_includes()` function from Lodash is used to check if an element exists in an array.

**Special JS Feature or Syntax**

There is no special JavaScript feature or syntax being tested in this benchmark. The focus is on comparing the performance of different approaches to a simple problem (checking for the existence of an element in an array).

**Other Alternatives**

If you're looking for alternative approaches to checking if an element exists in an array, some other options might include:

* Using `Array.prototype.every()` or `Array.prototype.some()`, which can be slower than `indexOf()` or `includes()`.
* Implementing your own custom search function using a loop.
* Using a more functional programming approach with methods like `findIndex()` or `some()`.

Keep in mind that the choice of approach will depend on the specific requirements and performance constraints of your project.

Related benchmarks:

IndexOf vs Includes vs lodash includes numbers (version: 0)

Banana

Comparing performance of: IndexOf vs Includes vs lodash

Created: 4 years ago by: Registered User

Jump to the latest result

IndexOf

Includes

lodash

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):