Benchmark: Lodash each vs native Object.keys.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 value = {1: {s: true}, 2: {s: false}, 3: {s: true}, 4: {s: false}}

Tests:

lodash
_.each(value, function (v, i) {})
native
Object.keys(value).forEach(function (v, i) {})

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash
native

Fastest: N/A

Slowest: N/A

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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 JSON and explain what's being tested.

**Benchmark Definition**

The benchmark is comparing two approaches: using Lodash's `each` function and using the native `Object.keys()` method with `forEach`.

**What are we testing?**

We're testing how efficiently these two approaches iterate over an object, performing some operation on each key-value pair. In this case, both approaches only perform a "noop" operation (i.e., doing nothing) on each value.

**Options being compared**

1. **Lodash's `each` function**: This function takes an object and a callback function as arguments. The callback function receives the current value and its index (key) as arguments.
2. **Native `Object.keys()` method with `forEach`**: This approach iterates over the object's keys using `Object.keys()`, which returns an array of strings representing the key names. Then, it uses the `forEach` method to execute a callback function on each key.

**Pros and Cons**

1. **Lodash's `each` function**
	* Pros:
		+ Easier to write, as it abstracts away the iteration logic.
		+ Might be more efficient due to the optimized implementation of Lodash's algorithms.
	* Cons:
		+ Adds an extra dependency (Lodash) to your project.
		+ May not provide the best performance if you're dealing with a large number of iterations, since it involves function calls and potential overhead from Lodash's internal workings.
2. **Native `Object.keys()` method with `forEach`**
	* Pros:
		+ No additional dependencies or overhead.
		+ Can be more efficient for very large datasets, as it avoids the function call overhead of Lodash's `each`.
	* Cons:
		+ Requires manual iteration logic, which can be error-prone and harder to read.

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks like array manipulation, object transformation, and more. In this case, the `each` function is used to iterate over an object, executing a callback function on each key-value pair.

**Special JS feature or syntax (none in this example)**

There are no special JavaScript features or syntax being tested in this benchmark.

**Other alternatives**

If you're not using Lodash and want to avoid the native `Object.keys()` method with `forEach`, you could consider other iteration methods, such as:

* Using a `for...in` loop
* Utilizing the `Array.prototype.forEach` method directly on an array representation of the object's keys (if applicable)
* Implementing your own custom iteration logic

Keep in mind that these alternatives might not provide the same performance benefits as using native methods or optimized libraries like Lodash.

For a more detailed understanding, you can refer to the [Lodash documentation](https://lodash.com/docs/4.17.5#each) and the [MDN documentation on `Object.keys()` and `forEach`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys).

Related benchmarks:

Lodash each vs native Object.keys.forEach (version: 0)

Comparing performance of: lodash vs native

Created: 7 years ago by: Guest

Jump to the latest result

lodash

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):