Benchmark: find vs contains

Script Preparation code:

var arr = [];
var i = 0;

while (i <= 1E5) arr[i] = i++;

Tests:

find
const item = arr.find(item => item == 1E5);
contains
const item = arr.includes(1E5);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
find
contains

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 definition and test cases to understand what's being tested.

**Benchmark Definition**

The benchmark is testing two different approaches for searching an array: `find` and `includes`. The arrays are initialized with 100,000 elements using a simple loop. The purpose of this benchmark is to compare the performance of these two methods in JavaScript.

**Script Preparation Code**

The script preparation code initializes an empty array `arr` and populates it with numbers from 0 to 1,000,000 using a while loop.

**Html Preparation Code**

There is no HTML preparation code provided, which means that the benchmark is running solely on the client-side (i.e., in the browser) and does not involve any server-side rendering or data fetching.

**Test Cases**

The benchmark consists of two individual test cases:

1. `find`: This test case uses the `find` method to search for an element with a value of 1,000,000 in the array.
2. `contains`: This test case uses the `includes` method to check if the array contains an element with a value of 1,000,000.

**Pros and Cons**

Here's a brief analysis of the pros and cons of each approach:

* **find**: The `find` method returns the first element that satisfies the provided condition. It can be faster than `includes` when searching for a single element in a large array.
	+ Pros: Efficient for finding a specific element, can be faster than `includes`.
	+ Cons: Returns the found element or `undefined`, depending on whether an element was found. Can be slower if no elements are found.
* **includes**: The `includes` method checks if an element with the specified value exists in the array. It returns `true` if the element is found and `false` otherwise.
	+ Pros: Returns a boolean result, which can be useful for performance-critical code. Can be faster than `find` if no elements are found.
	+ Cons: Can be slower than `find` when searching for a specific element.

**Library Usage**

In this benchmark, the `includes` method uses the implementation of the Array.prototype.includes() method, which is provided by modern JavaScript engines (e.g., V8 in Chrome).

**Special JS Features or Syntax**

There are no special JavaScript features or syntax used in this benchmark. The test code only employs basic JavaScript constructs like arrays, loops, and methods.

**Alternatives**

If you were to write a similar benchmark, you could consider the following alternatives:

* Use different data structures, such as linked lists or trees, to search for elements.
* Experiment with different algorithms, like binary search or hash-based searching.
* Compare performance using other methods, like `indexOf` or `some`.
* Add more test cases with varying array sizes and complexity.

Keep in mind that this benchmark is designed to compare the performance of two specific methods (`find` and `includes`) on a particular data structure (an array). You can always extend or modify it to explore different scenarios.

Related benchmarks:

find vs contains (version: 0)

Comparing performance of: find vs contains

Created: 5 years ago by: Registered User

Jump to the latest result

find

contains

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):