Benchmark: lodash.each vs Object.forEach test

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.17.10/lodash.min.js"></script>

Script Preparation code:

 var arr = [];
    for (var i = 0; i < 1000; i++) {
      arr[i] = i;
    }
  
    function someFn(i) {
      return i * 3 * 8;
    }

Tests:

lodash.each
_.forEach(arr, function(v,i) {someFn(v)})
native
arr.forEach(function(v,i) {someFn(v)})
fori
for (var i = 0, len = arr.length; i < len; i++) { someFn(arr[i]) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash.each
native
fori

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and explain what is being tested.

**Benchmark Overview**

The benchmark measures the performance of three different approaches to iterate over an array in JavaScript: Lodash's `forEach` method, the native `forEach` method, and a traditional `for` loop.

**Options Being Compared**

1. **Lodash's `forEach` method**: This approach uses the `_` alias for Lodash and its `forEach` function to iterate over the array.
2. **Native `forEach` method**: This approach uses the built-in `forEach` method of JavaScript arrays to iterate over the array.
3. **Traditional `for` loop**: This approach uses a traditional `for` loop to iterate over the array.

**Pros and Cons**

1. **Lodash's `forEach` method**:
	* Pros: Provides a convenient way to iterate over arrays with a single function call, eliminates the need for an explicit loop variable.
	* Cons: Adds overhead due to the Lodash library, may not be suitable for small arrays or performance-critical code.
2. **Native `forEach` method**:
	* Pros: Built-in and efficient, eliminates the need for an external library.
	* Cons: May have some overhead due to browser implementation details, requires understanding of array iteration methods.
3. **Traditional `for` loop**:
	* Pros: Lightweight, easy to understand, and control over iteration variables.
	* Cons: Requires explicit loop variable management, can be more verbose.

**Library Used**

In this benchmark, Lodash is used as a library for its `forEach` method. Lodash provides a convenient way to iterate over arrays with a single function call, eliminating the need for an explicit loop variable. However, it adds overhead due to the library itself.

**Special JS Feature/Syntax**

There is no special JavaScript feature or syntax being tested in this benchmark. The code uses standard JavaScript features such as array iteration and loops.

**Other Alternatives**

If you want to test other approaches, you can consider adding additional benchmark definitions for:

* Using `map` instead of `forEach`
* Using `reduce` instead of `forEach`
* Using a different library or framework (e.g., React's `useEffect`)
* Testing the performance of different JavaScript engines or runtimes

Keep in mind that each alternative will introduce new variables and trade-offs, making it essential to carefully consider your specific use case and requirements when choosing an approach.

For this benchmark, the results show that:

* Lodash's `forEach` method performs better than the native `forEach` method.
* The traditional `for` loop performs relatively poorly compared to the other two approaches.

These results provide insight into the performance characteristics of different array iteration methods in JavaScript.

Related benchmarks:

lodash.each vs Object.forEach test (version: 0)

Comparing performance of: lodash.each vs native vs fori

Created: 7 years ago by: Guest

Jump to the latest result

lodash.each

native

fori

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):