Benchmark: array find vs some update

HTML Preparation code:

<script src="
https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js
"></script>

Tests:

array find
var a = ['hello', 'a', 'bc']; var b = a.find(item => item === 'bc');
array some
var a = ['hello', 'a', 'bc']; var b = a.some(item => item === 'bc');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array find
array some

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 compares two methods for searching an array: the traditional `concat()` method and the new ES6 spread operator (`...`). The test case creates an array with three elements and attempts to find the element that matches a specific condition. We have two individual test cases:

1. **Array Find**: Uses the `find()` method to search for the element.
2. **Array Some**: Uses the `some()` method to search for at least one matching element.

**Options Compared**

In this benchmark, we're comparing two approaches:

1. **Traditional Concat Method**: The `concat()` method is used to create a new array with the desired elements.
	* Pros:
		+ Easy to understand and implement.
		+ Works in older browsers that don't support ES6 features.
	* Cons:
		+ Creates a new array, which can be memory-intensive for large datasets.
		+ Can lead to slower performance compared to optimized methods.
2. **ES6 Spread Operator**: The `...` operator is used to create a new array with the desired elements.
	* Pros:
		+ More concise and expressive than traditional methods.
		+ Can be faster due to optimized implementation in modern browsers.
	* Cons:
		+ May not work in older browsers that don't support ES6 features.

**Library Used**

In this benchmark, we're using the popular **Lodash** library, which provides a utility function for finding elements in an array. Specifically, we're using the `find()` method from Lodash.

**Special JS Feature/ Syntax**

The test case uses the ES6 spread operator (`...`) and arrow functions (e.g., `item => item === 'bc'`). These features are part of modern JavaScript syntax and are not supported in older browsers. The use of these features allows for more concise and expressive code, but may require additional setup or polyfills for older browsers.

**Benchmark Results**

The latest benchmark results show that the **Array Some** test case has a slightly faster execution rate (93614728.0 executions per second) compared to the **Array Find** test case (102322384.0 executions per second).

**Other Alternatives**

If you're looking for alternative approaches, consider the following:

1. **Filter()**: Instead of using `some()` or `find()`, you can use the `filter()` method to create a new array with matching elements.
2. **Map()**: If you need to perform an operation on each element, you can use the `map()` method to create a new array with transformed elements.

Keep in mind that these alternatives may have different trade-offs in terms of performance, readability, and compatibility with older browsers.

Related benchmarks:

array find vs some update (version: 0)

Compare the new ES6 spread operator with the traditional concat() method

Comparing performance of: array find vs array some

Created: 2 years ago by: Guest

Jump to the latest result

array find

array some

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):