Benchmark: lodash .foreach with object vs native foreach on keys

HTML Preparation code:


<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>

Script Preparation code:

var value = { a: 30310, b: 100303, c: 3040494, d: 6542321, e: 13123531};

Tests:

lodash
_.each(value, function(v,i) {console.log(v)})
native
Object.keys(value).forEach(function(key) {console.log(key, value[key])})

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 dive into the explanation of the benchmark.

**What is being tested?**

MeasureThat.net is testing two different approaches for iterating over objects in JavaScript:

1. **Lodash's `_.each()` function**: This is a custom implementation of the `foreach` loop, which iterates over an object's properties and calls a callback function for each property.
2. **Native `forEach()` method on object keys**: This uses the built-in `forEach()` method on the object's `keys` property to iterate over the object's properties.

**Options compared**

The two approaches are being compared in terms of:

* Speed: How fast is each approach?
* Memory usage: How much memory does each approach require?

**Pros and cons of each approach**

1. **Lodash's `_.each()` function**:
	* Pros:
		+ Easier to write, as it provides a familiar API for iterating over objects.
		+ May be optimized for performance by the Lodash team.
	* Cons:
		+ Requires including an additional library (Lodash) in your codebase.
		+ May have overhead due to the library's presence.
2. **Native `forEach()` method on object keys**:
	* Pros:
		+ Built-in, so no additional libraries are required.
		+ Likely to be optimized for performance by the browser engine.
	* Cons:
		+ Requires a good understanding of JavaScript and its built-in methods.

**Library used**

In this benchmark, Lodash is being used as a library. Specifically, it's version 4.17.10, which provides the `_.each()` function.

**Special JS feature or syntax**

None are mentioned in this benchmark.

**Other alternatives**

If you're looking for alternative approaches to iterating over objects in JavaScript, here are a few options:

1. **For...in loop**: This is another built-in method that iterates over an object's properties.
2. **for...of loop**: Introduced in ECMAScript 2015 (ES6), this loop is specifically designed for iterating over arrays and other iterable objects.
3. **Array.prototype.forEach()`**: This is a more general-purpose approach that can be used to iterate over any array-like object.

Each of these alternatives has its own trade-offs, and the choice of which one to use depends on your specific use case and personal preference.

Related benchmarks:

lodash .foreach with object vs native foreach on keys (version: 0)

Comparing performance of: lodash vs native

Created: 6 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):