Benchmark: for loop vs. lodash v4.17.21 range foreach

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for
lodash range foreach
array foreach
array lodash foreach
lodash range lodash foreach

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser/OS: Chrome 116 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
for	205348.8 Ops/sec
lodash range foreach	31289.4 Ops/sec
array foreach	67372.9 Ops/sec
array lodash foreach	17704.1 Ops/sec
lodash range lodash foreach	14380.6 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared options, pros and cons of each approach, and other considerations.

**Benchmark Overview**

The test measures the performance of three different approaches to iterate over an array:

1. **Native `for` loop**: A traditional `for` loop with manual incrementing.
2. **Lodash `.range()` method followed by `.forEach()`**: Lodash is a utility library that provides various functions for iterating over arrays. In this case, it uses the `.range()` method to generate an array of numbers and then applies the `.forEach()` method to iterate over each element.
3. **Array `.forEach()` method**: Another way to iterate over an array using the `forEach` method.

**Comparison Options**

The benchmark compares these three approaches:

* **Native `for` loop**: This is a traditional, manual approach that relies on the developer's knowledge of the loop mechanics.
* **Lodash `.range()` method followed by `.forEach()`**: This uses Lodash to simplify the iteration process. The `.range()` method generates an array of numbers, and then the `.forEach()` method applies the callback function (in this case, incrementing `x`) to each element.
* **Array `.forEach()` method**: A more concise approach that eliminates the need for manual loop management.

**Pros and Cons**

Here's a brief summary:

1. **Native `for` loop**:
	* Pros: Simple, well-established technique; can be used in many contexts beyond this specific benchmark.
	* Cons: Requires manual incrementing, which can lead to errors or performance issues if not done correctly.
2. **Lodash `.range()` method followed by `.forEach()`**:
	* Pros: Simplifies iteration and reduces boilerplate code; provides a consistent API for array iteration.
	* Cons: Adds an external dependency (Lodash), which may be overkill for some use cases.
3. **Array `.forEach()` method**:
	* Pros: Concise, easy to read, and well-established; eliminates manual loop management.
	* Cons: Limited control over the iteration process; can be slower due to the overhead of JavaScript's built-in methods.

**Lodash Library**

In this benchmark, Lodash is used as a utility library for array manipulation. The `.range()` method generates an array of numbers, and the `.forEach()` method applies the callback function to each element. This simplifies the iteration process but introduces an external dependency.

**Other Considerations**

* **Code readability**: The `for` loop requires manual incrementing, which can lead to code clutter. In contrast, the other two approaches use concise methods that make the code easier to read.
* **Performance overhead**: JavaScript's built-in methods (e.g., `.forEach()`) may introduce performance overhead due to their overhead and caching mechanisms. Manual loops can be faster but require more developer knowledge.

**Alternatives**

If you need to iterate over arrays in JavaScript, consider using:

1. **Native `for...of` loop**: A more modern approach that eliminates manual incrementing.
2. **Array methods**: Other array methods like `map()`, `reduce()`, or `filter()` can also be used for iteration.

The benchmark result will help determine which approach is the fastest and most suitable for your specific use case.

Related benchmarks:

for loop vs. lodash v4.17.21 range foreach (version: 0)

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

Created: one year ago by: Guest

Jump to the latest result

for

lodash range foreach

array foreach

array lodash foreach

lodash range lodash foreach

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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