Benchmark: JS some vs find - MeasureThat.net

Script Preparation code:


var arr = [];

var i = 0;
while(i < 100000) {
    arr.push('dummy' + i);
    i++;
}

arr.concat(['Admin', 'SuperAdmin']);

Tests:

Find
arr.find(role => role === 'Admin' || role === 'SuperAdmin');
Some
arr.some(role => role === 'Admin' || role === 'SuperAdmin');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Find
Some

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down what's being tested here.

**Benchmark Name and Description**

The benchmark is called "JS some vs find", which suggests that it's comparing the performance of two JavaScript methods: `some()` and `find()`.

**Script Preparation Code**

This code creates an array `arr` with 100,000 elements, each containing a string in the format `'dummy' + i`, where `i` is an integer from 0 to 99,999. It also appends two additional elements to the end of the array: `'Admin'` and `'SuperAdmin'`. This code prepares the test data for the benchmark.

**Individual Test Cases**

There are two test cases:

1. **Find**: The `find()` method is used to search for an element in the `arr` array that matches either `'Admin'` or `'SuperAdmin'`.
2. **Some**: The `some()` method is used to check if at least one element in the `arr` array meets the condition of being equal to either `'Admin'` or `'SuperAdmin'`.

**Latest Benchmark Result**

The latest benchmark results show that:

* The `some()` method executes approximately 524 times per second on Chrome 104 (Desktop, Windows).
* The `find()` method executes approximately 501 times per second on Chrome 104 (Desktop, Windows).

**Comparison of Options**

Here are the pros and cons of each approach:

* **Find():**
	+ Pros: More efficient when searching for a specific element that matches the condition.
	+ Cons: May return `undefined` if no match is found, which can be problematic in some scenarios.
* **Some():**
	+ Pros: Returns a boolean value indicating whether at least one element meets the condition.
	+ Cons: Less efficient than `find()` when searching for a specific element.

**Other Considerations**

When deciding between `some()` and `find()`, consider the following:

* If you're searching for a specific element, use `find()` if you need to return that element; otherwise, use `some()`.
* If you only care about whether at least one element meets the condition, use `some()`.
* Both methods have similar performance characteristics in this test case.

**Library and Special JS Feature**

No external libraries or special JavaScript features are used in this benchmark. The tests rely solely on built-in array methods (`find()` and `some()`) and standard JavaScript syntax.

**Other Alternatives**

If you need to search for an element that meets a condition, consider using:

* `indexOf()`: Returns the index of the first occurrence of the specified value.
* `includes()`: Returns a boolean value indicating whether the array includes the specified value.
* A custom loop-based approach (although this is generally discouraged in favor of built-in methods).

Keep in mind that these alternatives may have different performance characteristics, so choose the one that best fits your use case.

Related benchmarks:

JS some vs find (version: 0)

Comparing performance of: Find vs Some

Created: 6 years ago by: Guest

Jump to the latest result

Find

Some

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):