Benchmark: Object.keys -> native forEach vs lodash _.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'}

Tests:

lodash foreach
_.forEach(value, function(key){ console.log(key); });
native with forEach
var arr = [] Object.keys(value).forEach( function(key){ console.log(key); } )

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash foreach
native with forEach

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36 Edg/136.0.0.0

Browser/OS: Chrome 136 on Mac OS X 10.15.7

View result in a separate tab

native with forEach

132K/s

lodash foreach

110K/s

View exact numbers

Test name	Executions per second
✓ native with forEach	131,916 Ops/sec
lodash foreach	109,766 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the test cases and compare different approaches to measuring performance.

**Benchmark Overview**

The benchmark compares two approaches to iterate over an object's keys: using `Object.keys()` with `forEach` (native approach) versus using Lodash's `_forEach` function.

**Native Approach (Object.keys -> native forEach)**

* Uses `Object.keys()` to get an array of the object's key names.
* Iterates over this array using a `forEach` loop, which is built into JavaScript.
* The script preparation code creates an object `value` with properties `a`, `b`, and `c`.
* The test name is "native with forEach".

**Lodash Approach (lodash _.forEach)**

* Uses the Lodash library to get an array of key names using `_keys` function.
* Iterates over this array using Lodash's `_forEach` function, which is a higher-order function that takes a callback function as an argument.
* The script preparation code creates an object `value` with properties `a`, `b`, and `c`.
* The test name is "lodash foreach".

**Comparison**

The main difference between the two approaches is how they handle iteration. The native approach uses a built-in JavaScript function (`forEach`) that is relatively lightweight, while the Lodash approach uses a higher-order function that adds overhead due to the need for a callback function.

**Pros and Cons**

Native Approach:

Pros:

* Lightweight and fast
* Built-in JavaScript function, which is widely supported

Cons:

* Requires `Object.keys()` and `forEach`, which may not be as efficient as other methods

Lodash Approach:

Pros:

* Provides more control over iteration using a callback function
* Can be more flexible for certain use cases

Cons:

* Adds overhead due to the need for a higher-order function and callback
* Requires Lodash library, which may add latency

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, object iteration, and more. The `_keys` function used in this benchmark gets an array of key names from an object, while the `_forEach` function iterates over an array using a callback function.

**Special JS Feature: none**

This benchmark does not use any special JavaScript features or syntax that would affect its performance.

**Other Alternatives**

* Other approaches to iterate over an object's keys include:
	+ Using `for...in` loop, which can be slower than `forEach`
	+ Using a custom iteration function with `Array.prototype.forEach.call()`
	+ Using other libraries like underscore.js or moment.js

In summary, the benchmark compares two approaches to measure performance: using native JavaScript functions (`Object.keys()` and `forEach`) versus using Lodash's higher-order functions. The choice of approach depends on the specific requirements of the application and the desired level of control over iteration.

Object.keys -> native forEach vs lodash _.forEach (version: 0) Benchmark.js

Comparing performance of: `lodash foreach vs native with forEach`

Created: 6 years ago by: Guest

Go to the latest result

lodash foreach

native with forEach

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Object.keys -> native forEach vs lodash _.forEach (version: 0) Benchmark.js

Comparing performance of: lodash foreach vs native with forEach

Created: 6 years ago by: Guest

Go to the latest result

lodash foreach

native with forEach

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

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Comparing performance of: `lodash foreach vs native with forEach`