Benchmark: Lodash 4.16 vs JavaScript Loops

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Tests:

for
var x = 0; const array = Array(10000); for (var i = 0; i < array.lenght; i++) { x++; }
array foreach
var x = 0; const array = Array(10000); array.forEach(function (i) { x++; });
array lodash foreach
var x = 0; const array = Array(10000); _.forEach(array, function (i) { x++; });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for
array foreach
array lodash foreach

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

**What is tested on the provided JSON?**

The provided JSON represents a benchmark test case on MeasureThat.net, where the performance of different JavaScript approaches is compared. Specifically, it tests three ways to increment an index while iterating over a large array:

1. **Traditional `for` loop**: A vanilla JavaScript `for` loop with manual indexing.
2. **Array's `forEach` method**: Using the `forEach` method provided by the Array prototype.
3. **Lodash's `_forEach` function**: A custom implementation of `forEach` using Lodash.

**Options compared and their pros/cons:**

*   **Traditional `for` loop**: This approach is simple and straightforward but can be less efficient due to its manual indexing, which requires multiple operations (e.g., incrementing the index, accessing array elements).
    *   Pros:
        *   Easy to understand and implement.
        *   Low dependency on external libraries or frameworks.
    *   Cons:
        *   Potentially slower due to unnecessary operations.
*   **Array's `forEach` method**: This approach leverages the optimized implementation provided by JavaScript's built-in `forEach` method, which is likely implemented in native code and takes advantage of compiler optimizations.
    *   Pros:
        *   Optimized for performance, leveraging native implementations.
        *   Easy to use and integrate into existing codebases.
*   **Lodash's `_forEach` function**: This implementation uses the Lodash library to provide a standardized `forEach` method that can be used across different browsers and environments. However, this comes with an additional dependency on Lodash.
    *   Pros:
        *   Provides a standardized interface for iteration, making it easier to switch between libraries or implementations.
        *   Reduces the risk of using outdated or unsupported implementation-specific details.

**Other considerations:**

*   **Browser and environment variability**: The benchmark results may vary depending on the specific browser, operating system, and hardware configuration used for testing. MeasureThat.net likely accounts for these variations to provide more accurate comparisons.
*   **Library dependencies**: Lodash is used in the third test case, which introduces an additional dependency compared to the first two approaches.

**Special JavaScript features or syntax:**

None mentioned in this specific benchmark definition.

If you're interested in exploring other alternatives, here are a few more ways to incrementally iterate over arrays:

*   **`for...of` loop**: A newer `for` loop variant that allows iterating directly over array elements without manual indexing.
*   **`map()`, `filter()`, or `reduce()` methods**: While these methods are not exactly equivalent to the traditional `forEach` method, they can be used for iteration and processing of arrays in different ways.

You can explore the examples for each approach on MDN Web Docs: [Array Iterators](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators#Arrays), [Looping over an array with a `for...of` loop](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators#Loops)

Related benchmarks:

Lodash 4.16 vs JavaScript Loops (version: 0)

Comparing performance of: for vs array foreach vs array lodash foreach

Created: 6 years ago by: Guest

Jump to the latest result

for

array foreach

array lodash foreach

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):