Benchmark: For Of (test fork)

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>

Script Preparation code:


// Populate the base array
var arr = [];
for (var i = 0; i < 1000; i++) {
  arr[i] = i;
}

function fn(a) {
  return a * 2 * 5;
}

Tests:

native
arr.forEach(fn)
lodash
_.forEach(arr,fn)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
native
lodash

Fastest: N/A

Slowest: N/A

Latest run results:

No previous 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 provided benchmark and explain what's being tested, compared, and their pros and cons.

**Benchmark Overview**

The benchmark is designed to compare the performance of JavaScript's built-in `forEach` method with the equivalent functionality from the popular utility library Lodash. The test case uses a simple array population script, where an array `arr` is populated with 1000 elements, each assigned a value using the expression `i`.

**Tested Options**

The benchmark compares two options:

1. **Native For Of (forEach)**: This option uses JavaScript's built-in `forEach` method, which is executed natively by the browser.
2. **Lodash _.forEach**: This option uses Lodash's equivalent function `_forEach`, which wraps the native `forEach` method.

**Pros and Cons of Each Approach**

### Native For Of (forEach)

Pros:

* Fast execution: Since it's an native implementation, it should be optimized for performance and executed quickly.
* Simple to understand: It's a well-known and widely used API in JavaScript.

Cons:

* Limited features: The built-in `forEach` method only provides basic functionality and lacks some of the advanced features offered by Lodash.

### Lodash _.forEach

Pros:

* More features: Lodash's `_forEach` function offers additional features, such as support for promises, arrays with optional initial value, and even async executions.
* Ecosystem: As a popular utility library, Lodash has a vast ecosystem of plugins, modules, and community-driven contributions.

Cons:

* Slower execution: Since it's an external library, there might be some overhead associated with loading and executing the code, which could result in slower performance compared to the native implementation.
* Additional dependencies: The benchmark needs to include the Lodash library as a dependency, adding extra complexity.

**Library and Purpose**

The `lodash` library is a JavaScript utility collection that provides various functions for manipulating data. In this case, the `_forEach` function from Lodash is used to execute the same logic as the native `forEach` method, but with additional features and flexibility.

**Special JS Features or Syntax (None)**

There are no special JavaScript features or syntax used in this benchmark.

**Other Alternatives**

If you wanted to compare other options, here are a few alternatives:

* **Array.prototype.forEach.call()**: This is another way to execute the `forEach` method using the prototype chain.
* **For loop**: A simple traditional for loop could be used instead of `forEach`.
* **V8-specific implementation**: If running tests on a specific V8 version or target, you might want to test an optimized, V8-specific implementation.

Keep in mind that these alternatives would require modifications to the benchmark script and could result in different performance characteristics.

Related benchmarks:

For Of (test fork) (version: 0)

Comparing performance of: native vs lodash

Created: 7 years ago by: Guest

Jump to the latest result

native

lodash

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):