Benchmark: lodash _.forEach vs native Array.prototype.forEach

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>

Script Preparation code:

var arr = [ { value: 12345 }, { value: 824971 }, { value: 17317984 } ]

Tests:

native Array.prototype.forEach
arr.forEach(v => console.log(v))
lodash _.forEach
_.forEach(arr, v => console.log(v))

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
native Array.prototype.forEach
lodash _.forEach

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36 Edg/85.0.564.51

Browser/OS: Chrome 85 on Windows

View result in a separate tab

Test name	Executions per second
native Array.prototype.forEach	9558.6 Ops/sec
lodash _.forEach	21034.9 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**What is being tested?**

The benchmark is comparing two approaches to iterate over an array:

1. **Native `Array.prototype.forEach`**: This is a built-in method in the JavaScript Array prototype that iterates over the elements of an array, executing the provided callback function for each element.
2. **Lodash `_forEach`**: This is a utility function from the popular Lodash library, which provides a convenient way to iterate over arrays.

**Options being compared**

The benchmark is comparing two options:

1. Using `Array.prototype.forEach`
2. Using Lodash's `_forEach` function

**Pros and Cons of each approach:**

**Native `Array.prototype.forEach`:**

Pros:

* Built-in method, likely to be optimized for performance
* No additional library dependency required
* Simple and concise code

Cons:

* May not provide the same level of flexibility as a dedicated iterator library like Lodash
* Not suitable for complex iteration scenarios or high-performance applications

**Lodash `_forEach`**

Pros:

* Provides more control over iteration, including support for custom iterators and callbacks
* Allows for better handling of edge cases, such as empty arrays or null values
* Part of a larger utility library that provides many other useful functions

Cons:

* Requires an additional library dependency (Lodash)
* May introduce overhead due to the size of the library

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a collection of functional programming helpers, including arrays, strings, numbers, and more. The `_forEach` function is part of this library, allowing users to iterate over arrays in a flexible and customizable way.

**Special JS feature or syntax**

There doesn't appear to be any special JavaScript features or syntax being used in this benchmark. Both `Array.prototype.forEach` and Lodash's `_forEach` rely on standard JavaScript concepts, such as callbacks and function execution.

**Other alternatives**

If you're looking for alternative approaches to iteration over arrays, consider the following:

1. **`for...of` loop**: This is a newer way of iterating over arrays in modern JavaScript, which provides more control than `forEach`.
2. **`reduce()` method**: While not an iterator per se, `reduce()` can be used to iterate over an array and accumulate values into a result.
3. **Custom iterators**: If you need more fine-grained control over iteration, consider creating your own custom iterator using the `Iterator` protocol.

For high-performance applications or complex iteration scenarios, you may also want to explore specialized libraries like Iterables or libraries that provide optimized array iteration implementations, such as FastArray.

Related benchmarks:

lodash _.forEach vs native Array.prototype.forEach (version: 0)

Comparing performance of: native Array.prototype.forEach vs lodash _.forEach

Created: 4 years ago by: Guest

Jump to the latest result

native Array.prototype.forEach

lodash _.forEach

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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