Benchmark: ES6 some vs underscore for contains

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.1/underscore-min.js'></script>

Script Preparation code:

var data = ['CCP', 'RECRUITERPKG', 'TALENTINSIGHTSPACKAGE', 'LSSPKG', 'CAPJOBSLOT', 'ADS', 'VC', 'LSSSEAT', 'JOBWRAPPING', 'PREPAIDJYMBII'];

Tests:

_.contains
var result = _.contains(data, 'CCP');
array.some
var result = data.some(product => product === 'CCP');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.contains
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 break down the benchmark test.

**What is being tested?**

The provided JSON represents two individual test cases that measure the performance of JavaScript functions: `some()` and `_contains()`. Both tests aim to find out if a specific string ('CCP') exists within an array (`data`). The main difference between the two tests lies in how they achieve this:

1.  **`_contains()`**: This is a function from the underscore library, which is a popular utility library for JavaScript. The `_.contains()` function iterates over the elements of the array and checks if any element matches the specified value. It returns a boolean result indicating whether the element was found.
2.  **`array.some()`**: This is a native JavaScript method that checks each element in an array to see if it passes a test, which is provided as a function. In this case, the test function checks if the current element is equal to 'CCP'. The `some()` method returns a boolean result indicating whether at least one element passed the test.

**Options compared**

The two tests are comparing two different approaches to achieve the same goal:

*   **Using an external library (underscore) vs. native JavaScript methods (Array.prototype.some())**: Both methods have their pros and cons:
    *   Pros of using underscore's _contains() function:
        *   More readable and concise code
        *   Built-in function for a specific use case, reducing the need to implement it from scratch
    *   Cons of using underscore's _contains() function:
        *   Adds extra complexity due to the dependency on an external library
        *   May not be optimal if you're only using this one method in your codebase
    *   Pros of using native JavaScript methods (Array.prototype.some()):
        *   No additional dependencies or complexity
        *   Native performance and optimization by the browser
    *   Cons of using native JavaScript methods:
        *   Less readable and more verbose code
        *   May require additional implementation effort

**Pros, cons, and other considerations**

When choosing between these two approaches:

*   Use `_.contains()` when:
    *   You need a simple, one-off comparison.
    *   Code readability is essential (especially in large or complex projects).
*   Use native JavaScript methods (`Array.prototype.some()`) when:
    *   Performance optimization is crucial.
    *   You're working on a project with limited external dependencies.

**Other alternatives**

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

1.  **Using other native array methods**: Instead of `some()` or `_contains()`, you could use `includes()`, which returns true if the array contains the specified value.
2.  **Manual iteration and indexing**: You can implement a simple loop to iterate over the array elements and check for matches, but this would likely be less efficient than using native methods.

In conclusion, both tests aim to measure performance differences between two widely used JavaScript functions: underscore's _contains() function and native Array.prototype.some(). By understanding the pros and cons of each approach, developers can make informed decisions about which method best suits their project needs.

Related benchmarks:

ES6 some vs underscore for contains (version: 0)

Comparing performance of: _.contains vs array.some

Created: 6 years ago by: Registered User

Jump to the latest result

_.contains

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):