Benchmark: lodash foreach vs forEach

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js"></script>

Script Preparation code:

var array = ['a', 'b', 'c']

Tests:

_.forEach
_.forEach(array, (value, index) => { console.log(value) })
array.forEach
array.forEach((value, index) => { console.log(value) })

Historical Performance Data aggregated from 82 community runs

Desktop Results:

Chrome 69 runs

array.forEach

101K/s

_.forEach

97K/s

View exact numbers

✓ array.forEach: 101,243 ops/sec
• _.forEach: 96,590 ops/sec

Firefox 13 runs

_.forEach

77K/s

array.forEach

77K/s

View exact numbers

✓ _.forEach: 77,442 ops/sec
• array.forEach: 77,082 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.forEach
array.forEach

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 5 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36 Edg/145.0.0.0

Browser/OS: Chrome 145 on Windows

View result in a separate tab

array.forEach

202K/s

_.forEach

197K/s

View exact numbers

Test name	Executions per second
✓ array.forEach	201,656 Ops/sec
_.forEach	197,196 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation of the provided benchmark.

**What is tested:**
The benchmark tests two different approaches to iterate over an array in JavaScript: `lodash.forEach` and `array.forEach`.

**Options compared:**

*   **_.forEach**: This is a function from the Lodash library that provides a more concise and expressive way of iterating over arrays. It takes two arguments: the array to iterate over, and a callback function with the following signature: `(value, index) => {...}`.
*   **array.forEach**: This is a built-in JavaScript method that iterates over an array using the same callback syntax as _.forEach.

**Pros and Cons of each approach:**

*   **_.forEach**:
    *   Pros:
        *   More concise and expressive code
        *   Easy to read and maintain
        *   Built-in support in Lodash library, reducing boilerplate code
    *   Cons:
        *   Requires importing the Lodash library
        *   May introduce additional dependencies in projects
*   **array.forEach**:
    *   Pros:
        *   No additional dependencies required
        *   Native JavaScript implementation, no external libraries needed
    *   Cons:
        *   Less concise and less expressive code compared to _.forEach
        *   Requires explicit callback function signature

**Library:**
The Lodash library is a popular utility belt for functional programming in JavaScript. It provides a wide range of functions for tasks such as array manipulation, string manipulation, and more.

**Special JS feature or syntax:**
There are no specific special features or syntax used in this benchmark. However, it's worth noting that both `_.forEach` and `array.forEach` use the same callback syntax, which is a fundamental concept in JavaScript iteration.

**Other alternatives:**

*   Other array iteration methods available in JavaScript include `for...of`, `for...in`, and `map()`. Each has its own trade-offs and use cases.
*   For more advanced iteration scenarios, other libraries like Ramda or Purescript may offer more expressive and functional programming abstractions.

When deciding between _.forEach and array.forEach, consider the following:

*   If you need to iterate over an array with a concise and expressive syntax, _.forEach might be the better choice.
*   If you want to avoid adding external dependencies to your project, or prefer native JavaScript implementation, `array.forEach` is a suitable alternative.

lodash foreach vs forEach (version: 0)

Comparing performance of: `_.forEach vs array.forEach`

Created: 6 years ago by: Guest

Go to the latest result

_.forEach

array.forEach

Historical Performance Data aggregated from 82 community runs

Desktop Results:

Chrome 69 runs

Firefox 13 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

lodash foreach vs forEach (version: 0)

Comparing performance of: _.forEach vs array.forEach

Created: 6 years ago by: Guest

Go to the latest result

_.forEach

array.forEach

Historical Performance Data aggregated from 82 community runs

Desktop Results:

Chrome 69 runs

Firefox 13 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Related benchmarks

Comparing performance of: `_.forEach vs array.forEach`