Benchmark: _.forEach vs Array.forEach

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var arr = [123, 456, 789];
var count = 0;

Tests:

Native
arr.forEach(function(v,i) { if (v.a != null) { count++; } })
Lodash
_.forEach(arr, function(v,i) { if (v.a != null) { count++; } })

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):

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Let's break down the provided benchmarking test cases.

**Benchmark Definition and Options Compared**

The benchmark measures the performance difference between two approaches:

1. **Native**: Using the built-in `forEach` method in JavaScript, without any additional libraries or modifications.
2. **Lodash**: Using the `_.forEach` function from the Lodash library.

**Pros and Cons of Each Approach:**

* **Native**:
	+ Pros: Built-in, no dependencies, easy to understand.
	+ Cons: May have less control over implementation details, potentially slower due to overhead.
* **Lodash**:
	+ Pros: Can provide more fine-grained control over iteration, potentially faster due to optimized implementation.
	+ Cons: Requires an external library, may introduce additional overhead.

**Library and Its Purpose**

In this case, the Lodash library is used for its `_.forEach` function. Lodash is a popular JavaScript utility library that provides various functions for common tasks, such as iteration, array manipulation, and more. The `_` prefix indicates that it's part of the Lodash namespace.

**Special JS Feature or Syntax**

There are no special JavaScript features or syntax used in these test cases. Both approaches use standard JavaScript `forEach` methods.

**Other Considerations**

When writing benchmarks like this one, consider the following:

* Using a consistent version of JavaScript and its libraries to ensure fair comparisons.
* Avoiding external factors that might influence performance, such as network connectivity or system resources.
* Providing clear and concise benchmark definitions to ensure accurate results.

**Alternatives**

If you wanted to use alternative approaches, you could consider:

1. **Built-in `forEach` with custom implementation**: Instead of using the standard `forEach` method, you could implement your own loop using a `for` loop or another iteration mechanism.
2. **Other libraries or frameworks**: Depending on your requirements, you might want to explore other libraries or frameworks that provide optimized iteration implementations, such as React's `React.createElement` or Angular's `NgFor`.
3. **Native WebAssembly (WASM) or native modules**: In some cases, using WASM or native modules can provide faster performance compared to JavaScript-based approaches.

Keep in mind that each alternative approach has its own trade-offs and requirements, and the best choice depends on your specific use case and performance goals.

Related benchmarks:

_.forEach vs Array.forEach (version: 1)

Comparing performance of: Native vs Lodash

Created: 7 years ago by: Registered User

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):