Benchmark: lodash.each vs Object.forEach vs jQuery each - jqv3 + fixed

HTML Preparation code:

<script
  src="https://code.jquery.com/jquery-3.6.3.min.js"
  integrity="sha256-pvPw+upLPUjgMXY0G+8O0xUf+/Im1MZjXxxgOcBQBXU="
  crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>

Script Preparation code:


// Populate the base array
var arr = [];
for (var i = 0; i < 100000; i++) {
  arr[i] = i;
}

function fn(a) {
  return a * 2 * 5;
}

Tests:

lodash.each
_.forEach(arr,fn)
native
arr.forEach(fn)
for loop
for(i=0;i<arr.length;i++) fn(arr[i]);
jQuery each
$(arr).each(fn);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash.each
native
for loop
jQuery each

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 dive into the details of this benchmark.

**Benchmark Description**

The test measures the performance difference between three approaches:

1. `lodash.forEach(arr,fn)`: Uses Lodash's `forEach` function to iterate over an array and apply a callback function (`fn`) to each element.
2. `arr.forEach(fn)`: A native JavaScript function that iterates over an array using a `for...of` loop with a callback function (`fn`).
3. `for(i=0;i<arr.length;i++) fn(arr[i])`: An explicit `for` loop iteration, also applying the `fn` function to each element of the array.
4. `$(arr).each(fn);`: Uses jQuery's `each` function to iterate over an array and apply a callback function (`fn`) to each element.

**Options Comparison**

These four approaches differ in their syntax, library dependencies, and execution mechanisms:

* **Lodash's `forEach`**: A higher-order function that takes an array and a callback function as arguments. It's a concise way to iterate over an array without explicitly managing the loop.
* **Native `forEach`**: A built-in JavaScript function that uses a `for...of` loop under the hood, providing direct access to the array elements.
* **Explicit `for` loop**: Uses a traditional `for` loop with an index variable (`i`) and manually accessing each element of the array using `arr[i]`.
* **jQuery's `each`**: A function that takes an element (in this case, an array) and a callback function as arguments. It provides a convenient way to iterate over elements without explicit looping.

**Pros and Cons**

Here are some pros and cons for each approach:

* Lodash's `forEach`:
	+ Pros: Concise syntax, easy to use, and abstracts away the loop management.
	+ Cons: Adds an additional dependency (Lodash), might be slower due to function overhead.
* Native `forEach`:
	+ Pros: Built-in function, likely optimized for performance, and uses native code.
	+ Cons: Requires direct access to array elements using a `for...of` loop.
* Explicit `for` loop:
	+ Pros: Low-overhead, no dependencies or functions added.
	+ Cons: More verbose syntax, requires manual management of the loop.
* jQuery's `each`:
	+ Pros: Convenient syntax, easy to use, and provides a familiar API for DOM element iteration.
	+ Cons: Adds an additional dependency (jQuery), might be slower due to function overhead.

**Library Considerations**

The benchmark uses Lodash as a library. Lodash is a popular utility library that provides various functions for working with arrays, objects, strings, and more. In this case, `forEach` is used to iterate over the array, which simplifies the code but adds an additional dependency.

**Special JS Features or Syntax**

There are no special JavaScript features or syntaxes mentioned in the benchmark. The focus is on comparing different iteration approaches using standard JavaScript functions.

**Other Alternatives**

If you need alternative iterations for a specific use case, consider:

* `map()`: Used to create a new array with transformed values.
* `reduce()`: Used to reduce an array to a single value based on a callback function.
* `filter()`: Used to create a new array with elements that pass a test.

Keep in mind that these alternatives might have different performance characteristics, syntax requirements, or dependencies compared to the approaches tested here.

Related benchmarks:

lodash.each vs Object.forEach vs jQuery each - jqv3 + fixed (version: 0)

Comparing performance of: lodash.each vs native vs for loop vs jQuery each

Created: 3 years ago by: Registered User

Jump to the latest result

lodash.each

native

for loop

jQuery each

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):