Benchmark: Lddddddd - MeasureThat.net

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>

Script Preparation code:

var max1 = 100000; // 100,000 (100 Thousand)
var max2 = 10000000; // 10,000,000 (10 Million)
var max3 = 100000000; // 100,000,000 (100 Million)

var arr1 = [];
//for (var i = 0; i <= max1; i++) { arr1.push(i); }

var arr2 = [];
for (var i = 0; i <= max2; i++) { arr2.push(i); }

var arr3 = [];
//for (var i = 0; i <= max3; i++) { arr3.push(i); }

Tests:

Native
arr2.keys()
Lodash.js filter
_.keys(arr2);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Native
Lodash.js filter

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and its test cases.

**Benchmark Definition Json**

The provided JSON represents a JavaScript microbenchmark, specifically designed to measure the performance of two different approaches for iterating over arrays in JavaScript: the native `for` loop and the `_.keys()` function from the Lodash.js library.

**Script Preparation Code**

The script preparation code defines three variables with large values (`max1`, `max2`, and `max3`) and creates three empty arrays, `arr1`, `arr2`, and `arr3`. The native `for` loop is used to populate each array with a specific number of elements.

**Html Preparation Code**

The HTML preparation code includes a script tag that loads the Lodash.js library from a CDN.

**Individual Test Cases**

There are two individual test cases:

1. **Native**: This test case measures the performance of the native `for` loop approach for iterating over an array.
2. **Lodash.js filter**: This test case measures the performance of using the `_.keys()` function from Lodash.js to iterate over an array.

**Options Compared**

The two options compared in this benchmark are:

1. Native `for` loop
2. Lodash.js `_.keys()` function

**Pros and Cons of Each Approach:**

* **Native `for` loop**: Pros:
	+ Fastest and most efficient way to iterate over arrays.
	+ No additional library dependencies.
	+ Well-known and widely supported.
* Cons:
	+ Requires manual indexing, which can be error-prone.
	+ May not work correctly for all array types (e.g., sparse arrays).
* **Lodash.js `_.keys()` function**: Pros:
	+ Convenient and readable way to iterate over arrays.
	+ Reduces boilerplate code.
	+ Works with most array types.
* Cons:
	+ Adds an additional library dependency, which may impact performance in some cases.
	+ May be slower than the native `for` loop for very large arrays.

**Library: Lodash.js**

Lodash.js is a popular JavaScript utility library that provides various functions for working with arrays, objects, and more. The `_.keys()` function is part of this library, which returns an array containing the property names of an object (in this case, an array).

**Special JS Feature/Syntax: None mentioned**

There are no special JavaScript features or syntax used in these test cases.

**Other Alternatives**

If you need to iterate over arrays in JavaScript, other alternatives include:

1. `forEach()` method
2. `for...of` loop (in older browsers that don't support `for...of`)
3. `Array.prototype.map()`, `Array.prototype.filter()`, and `Array.prototype.reduce()` methods (which may be slower than the native `for` loop)

Keep in mind that the best approach will depend on your specific use case, performance requirements, and personal preference.

Related benchmarks:

Lddddddd (version: 0)

Comparing performance of: Native vs Lodash.js filter

Created: 5 years ago by: Guest

Jump to the latest result

Native

Lodash.js filter

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):