Benchmark: array find vs some vs includes (urls)

Tests:

array find
var a = ['www.startpage.com/do/metasearch.pl?q=foo+bar', 'www.startpage.com', 'en.m.wikipedia.org/wiki/AppleScript', 'developer.mozilla.com']; var b = a.find(item => item === 'developer.mozilla.com');
array some
var a = ['www.startpage.com/do/metasearch.pl?q=foo+bar', 'www.startpage.com', 'en.m.wikipedia.org/wiki/AppleScript', 'developer.mozilla.com']; var b = a.some(item => item === 'developer.mozilla.com');
array includes
var a = ['www.startpage.com/do/metasearch.pl?q=foo+bar', 'www.startpage.com', 'en.m.wikipedia.org/wiki/AppleScript', 'developer.mozilla.com']; var b = a.includes('developer.mozilla.com');
array indexOf
var a = ['www.startpage.com/do/metasearch.pl?q=foo+bar', 'www.startpage.com', 'en.m.wikipedia.org/wiki/AppleScript', 'developer.mozilla.com']; var b = a.indexOf('developer.mozilla.com');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array find
array some
array includes
array indexOf

Fastest: N/A

Slowest: N/A

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

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Let's break down what's being tested in the provided JSON.

The benchmark is testing four different ways to check if an element exists in an array:

1. `Array.prototype.find()`: Returns the first element that satisfies the provided condition.
2. `Array.prototype.some()`: Returns a boolean indicating whether at least one element in the array satisfies the provided condition.
3. `Array.prototype.includes()`: Returns a boolean indicating whether the specified value is present in the array.
4. `Array.prototype.indexOf()`: Returns the index of the first occurrence of the specified value in the array.

Now, let's discuss the pros and cons of each approach:

**1. Array.prototype.find():**

Pros:

* Returns the actual element that matches the condition, making it useful for retrieving the matched value.
* More concise than `some()` or `includes()`, which can be beneficial for readability.

Cons:

* May not be as efficient as other methods if no match is found, as it has to traverse the array until finding a suitable element.
* Can throw an error if no match is found (depending on how it's used), whereas `some()` and `includes()` return a boolean value.

**2. Array.prototype.some():**

Pros:

* Returns a boolean indicating whether any element in the array satisfies the condition, making it useful for checking multiple conditions simultaneously.
* More efficient than `find()` when no match is found, as it can stop traversing the array immediately.

Cons:

* Returns a boolean value, which might not be as convenient as getting the actual matched value like with `find()`.
* Can be less readable if used in complex scenarios.

**3. Array.prototype.includes():**

Pros:

* Fast and efficient, making it suitable for large arrays or performance-critical code.
* Returns a simple boolean indicating whether the element is present, without throwing an error on no-match cases.

Cons:

* Only returns a boolean value, not the actual matched element, which might be less useful in certain scenarios.

**4. Array.prototype.indexOf():**

Pros:

* Fast and efficient, similar to `includes()`.
* Returns the index of the first occurrence, making it useful for accessing elements by their position.

Cons:

* Returns -1 if no match is found, whereas other methods return a boolean value or an error (depending on how they're used).

Now, let's discuss special considerations and libraries used in the benchmark:

The test cases use `var` declarations with arrow functions (`=>`) for simplicity. There are no notable libraries being used in these examples.

Some special JavaScript features used here include:

* Arrow functions (`=>`)
* Template literals (used for multiline strings)

Keep in mind that modern JavaScript development often focuses on more recent features like classes, modules, and async/await.

As for alternatives, other methods to check if an element exists in an array include:

* Using `for...of` loop or `forEach()` with a callback function
* Utilizing `Array.prototype.includes()` with the same syntax as shown in the benchmark (e.g., `a.includes('developer.mozilla.com')`)
* Implementing a custom search function using indexing and bounds checking

These alternatives may offer varying trade-offs in terms of performance, readability, or convenience.

Related benchmarks:

array find vs some vs includes (urls) (version: 0)

Comparing performance of: array find vs array some vs array includes vs array indexOf

Created: 3 years ago by: Guest

Jump to the latest result

array find

array some

array includes

array indexOf

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):