Benchmark: lodash.each vs Object.forEach

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Script Preparation code:

var value = [{a: 30310}, {b: 100303}, {c: 3040494}]
var res = 0;

Tests:

lodash.each
_.each(value, function(v,i) {res+=i}) console.log(res)
native
value.forEach(function(v,i) {res+=i}) console.log(res)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash.each
native

Fastest: N/A

Slowest: N/A

Latest 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.

**Benchmark Overview**

The test compares two approaches to iterate over an array: `_.each` from Lodash (a popular utility library) and the native `forEach` method.

**Options Compared**

Two options are compared:

1. **Lodash's _.each**: This is a higher-order function that takes a callback function as its argument, which is executed for each element in the array.
2. **Native JavaScript's forEach**: This is a built-in method of arrays that executes a callback function once for each element in the array.

**Pros and Cons**

Here are some pros and cons of each approach:

**Lodash's _.each**

Pros:

* Provides a more explicit and predictable way to iterate over an array, with access to the index (`i`) and value (`v`).
* Can be more efficient in certain cases (e.g., when the callback function modifies the value being iterated).

Cons:

* Requires Lodash library to be included, which may add unnecessary overhead.
* May have a slight performance penalty due to the additional function call.

**Native JavaScript's forEach**

Pros:

* Built-in method that doesn't require any external libraries or function calls.
* Can be more efficient in terms of execution time, since it bypasses the overhead of Lodash's higher-order function.

Cons:

* Less explicit and less predictable than _.each, as it only provides access to the value being iterated (`v`), without an index (`i`).

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, object manipulation, and more. In this case, `_each` is used to simplify the iteration process.

**Special JS Feature/ Syntax**: None mentioned in this benchmark.

**Other Alternatives**

If you want to measure the performance of native `forEach`, you could use a similar benchmark with an alternative implementation, such as using a simple for loop or a generator function. If you prefer to use Lodash, you could also experiment with different versions of the library (e.g., 4.x vs 5.x) to see if there are any performance differences.

Keep in mind that the results may vary depending on the specific JavaScript environment and browser being used.

Related benchmarks:

lodash.each vs Object.forEach (version: 0)

Comparing performance of: lodash.each vs native

Created: 8 years ago by: Guest

Jump to the latest result

lodash.each

native

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):