Benchmark: lodash vs es6 in forEach method up

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js'></script>

Script Preparation code:

var array = [
  { 'name': 'lim', 'age': 26 },
  { 'name': 'kim', 'age': 28 },
  { 'name': 'choi', 'age': 32 },
  { 'name': 'park', 'age': 21 }
 ];

Tests:

lodash forEach method
_.forEach(array, (arr, index, self) => { console.log(arr, index); });
lodash each method
_.each(array, (arr, index, self) => { console.log(arr, index); });
es6 forEach method
array.forEach((arr, index, self) => { console.log(arr, index); });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash forEach method
lodash each method
es6 forEach method

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser/OS: Chrome 134 on Windows

View result in a separate tab

Test name	Executions per second
lodash forEach method	27267.0 Ops/sec
lodash each method	27238.6 Ops/sec
es6 forEach method	30239.5 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated one month ago):

LLMs can make mistakes. Check important info.

This benchmark evaluates different approaches for iterating over an array of objects in JavaScript, specifically comparing the use of the `lodash` library to native JavaScript ES6 methods. The focus is on the `forEach` method provided by both `lodash` and the native JavaScript array. Here’s a breakdown of the options tested, their respective pros and cons, and other considerations.

### Options Tested

1. **Lodash `forEach` Method**
   - **Code:** `_.forEach(array, (arr, index, self) => { console.log(arr, index); });`
   - **Description:** This implementation uses the `forEach` function from the `lodash` library to iterate over the `array`. It logs each element and its index.

2. **Lodash `each` Method**
   - **Code:** `_.each(array, (arr, index, self) => { console.log(arr, index); });`
   - **Description:** The `each` method in `lodash` is functionally equivalent to `forEach`. It provides a shorthand for iteration without changing the array itself and logs each element and index, similar to `lodash's forEach`.

3. **Native JavaScript `forEach` Method**
   - **Code:** `array.forEach((arr, index, self) => { console.log(arr, index); });`
   - **Description:** This uses the native JavaScript `Array.prototype.forEach` method which allows iterating through the elements of the `array` with a provided callback function.

### Performance Results

From the benchmark results, the executions per second for each option on a specific setup were as follows:

- **ES6 forEach method:** 30,239.52 executions/sec
- **Lodash forEach method:** 27,266.96 executions/sec
- **Lodash each method:** 27,238.63 executions/sec

### Pros and Cons of Each Approach

1. **Lodash `forEach` and `each` Methods**
   - **Pros:**
     - Offers additional utility methods for manipulating arrays and objects, making it great for complex operations.
     - Provides cross-browser compatibility for older JavaScript environments.
     - The API is very user-friendly and often more concise.
   - **Cons:**
     - Introduces a dependency in your project, which can increase bundle size and load times.
     - Can be slower than native methods due to the overhead of a library function call.

2. **Native JavaScript `forEach` Method**
   - **Pros:**
     - Built into the language; no additional dependencies needed, resulting in faster loading and execution times.
     - Optimized by modern JavaScript engines, leading to better performance, as seen in the benchmark.
     - Typically results in cleaner, more readable code when performing simple iterations.
   - **Cons:**
     - Less feature-rich compared to `lodash`. For instance, certain advanced manipulations require additional coding with vanilla JS that would be simpler with `lodash`.

### Other Considerations

- **Library Dependency:** If you're working within a modern JavaScript environment, using native methods (like ES6) is generally recommended to reduce library dependencies.
- **Performance Trade-offs:** As performance metrics show, native methods often outperform library calls, so choosing between these options can depend on the specific context of the application (e.g., if performance is critical).

### Alternatives

Besides the tested methods, here are some alternatives to consider for iterating over arrays in JavaScript:

- **For Loop:** The traditional `for` loop offers the highest performance and gives detailed control over the iteration process. However, it can be less concise than `forEach` or the `for...of` loop.
  
- **`for...of` Loop:** Introduced in ES6, this allows you to iterate over iterable objects (like arrays) in a cleaner syntax compared to a standard `for` loop, providing readability while retaining performance.
  
- **Libraries:** If you're performing more complex data manipulations, libraries like `underscore.js` (similar to lodash but more minimalistic) or using built-in methods like `map`, `filter`, and `reduce` may also be alternatives depending on the requirements.

In conclusion, this benchmark effectively compares different JavaScript array iteration methodologies, highlighting performance variances and weighing the benefits of using a library like `lodash` against leveraging the native capabilities inherent in ES6 JavaScript.

Related benchmarks:

lodash vs es6 in forEach method up (version: 1)

Comparing performance of: lodash forEach method vs lodash each method vs es6 forEach method

Created: one month ago by: Guest

Jump to the latest result

lodash forEach method

lodash each method

es6 forEach method

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated one month ago):