Benchmark: Includes vs. IndexOf v2

Script Preparation code:

var array = ["a", "b", "c", "d", "e", "f", "g"]

Tests:

Includes()
if (array.includes("f") === true) {};
IndexOf()
if (array.indexOf("f") !== -1) {};
Includes() v2
if (array.includes("f")) {};

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Includes()
IndexOf()
Includes() v2

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 dive into the world of JavaScript microbenchmarks on MeasureThat.net!

**Benchmark Overview**

The benchmark is designed to compare the performance of two different approaches for searching for an element in an array: `includes()` and `indexOf()`. The benchmark consists of three test cases, each testing one of these approaches.

**Script Preparation Code**

The script preparation code defines a constant array `array` containing seven elements:
```javascript
var array = ["a", "b", "c", "d", "e", "f", "g"];
```
This array is used as the input for the benchmarking tests.

**Html Preparation Code**

Since there is no HTML preparation code, we can skip this section.

**Test Cases**

There are three test cases:

1. **Includes()**
```javascript
if (array.includes("f")) {};
```
This test case uses the `includes()` method to search for the string "f" in the array.
2. **IndexOf()**
```javascript
if (array.indexOf("f") !== -1) {};
```
This test case uses the `indexOf()` method to search for the index of the string "f" in the array.
3. **Includes() v2**
```javascript
if (array.includes("f")) {};
```
This test case is similar to the first one, but without the explicit comparison (`=== true`).

**Library and Purpose**

In this benchmark, no external library is used.

**Special JS Features or Syntax**

There are no special JavaScript features or syntax used in these test cases.

**Comparison of Options**

Let's analyze the three options:

1. **Includes()**
	* Pros:
		+ Simple to use: `includes()` is a straightforward method that searches for the presence of an element.
	* Cons:
		+ May not be optimized for performance, especially when dealing with large arrays.
2. **IndexOf()**
	* Pros:
		+ Can provide more information about the index of the found element.
	* Cons:
		+ May be slower than `includes()` due to the additional overhead of finding the index.
3. **Includes() v2 (without explicit comparison)**
	* Pros:
		+ Similar performance profile as `includes()`, but without the unnecessary comparison.
	* Cons:
		+ May not provide any significant benefits over the original `includes()` implementation.

**Other Considerations**

When choosing between `includes()` and `indexOf()`, consider the following factors:

* **Performance**: If you need to search for an element in a large array, `indexOf()` might be slower due to the additional overhead of finding the index.
* **Readability**: `includes()` is generally easier to read and understand, as it explicitly states the intention of searching for an element.
* **Flexibility**: `indexOf()` can provide more information about the index of the found element, which might be useful in certain situations.

**Alternatives**

If you're interested in exploring alternative approaches, consider using:

* **Array.prototype.find()**: This method returns the first element that satisfies the provided callback function. It's similar to `includes()`, but provides more control over the search process.
* **Array.prototype.findIndex()**: This method returns the index of the first element that satisfies the provided callback function. It's similar to `indexOf()`, but provides more information about the index.

Keep in mind that these alternatives might have different performance profiles and trade-offs compared to `includes()` and `indexOf()`.

Related benchmarks:

Includes vs. IndexOf v2 (version: 0)

Comparing performance of: Includes() vs IndexOf() vs Includes() v2

Created: 4 years ago by: Guest

Jump to the latest result

Includes()

IndexOf()

Includes() v2

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):