Benchmark: Lodash.js vs Native isArrary

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/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
Array.isArray(arr1)
Lodash.js filter
_.isArray(arr1)

Historical Performance Data aggregated from 8 community runs

Desktop Results:

Chrome 8 runs

Native

101.7M/s

Lodash.js filter

90.1M/s

Fastest: Native (1.1x faster)

View exact numbers

✓ Native: 101,713,408 ops/sec
• Lodash.js filter: 90,118,496 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

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:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser/OS: Chrome 138 on Windows

View result in a separate tab

Native

112.2M/s

Lodash.js filter

100.8M/s

View exact numbers

Test name	Executions per second
✓ Native	112,170,456 Ops/sec
Lodash.js filter	100,765,336 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 provided benchmark definition and individual test cases to understand what's being tested.

**Benchmark Definition**

The JSON represents a JavaScript microbenchmark that compares the performance of two approaches:

1. **Native**: The native implementation, which is built into the browser or runtime environment, checks if an array is an instance of `Array` using the `isArray()` method.
2. **Lodash.js filter**: This approach uses the Lodash library to check if an array is an instance of `Array`. Specifically, it's using the `_.isArray()` function, which is a part of the Lodash utility library.

**What's being tested?**

The benchmark tests the performance difference between these two approaches. In other words, it measures how fast each method can identify whether an object is an array or not.

**Pros and Cons of different approaches:**

1. **Native (isArray())**
	* Pros:
		+ Built-in implementation, so no additional dependencies.
		+ Typically faster, as it's a native function.
	* Cons:
		+ May be less readable or maintainable for developers unfamiliar with the implementation.
2. **Lodash.js filter (_.isArray())**
	* Pros:
		+ More explicit and readable code, as it's wrapped in a utility library function.
		+ Easier to understand and debug for developers familiar with Lodash.
	* Cons:
		+ Slower due to the overhead of loading the Lodash library and executing its function.

**Other considerations:**

1. **Library usage**: The benchmark uses the Lodash library, which is a popular utility library that provides various functional programming helpers. Its presence introduces an additional dependency and potential performance overhead.
2. **Special JS features or syntax**: There are no special JavaScript features or syntax used in this benchmark.

**Alternative approaches:**

1. **Other native implementations**: Depending on the browser or runtime environment, there might be alternative native implementations of `isArray()` that could be compared.
2. **Lodash.js alternatives**: If Lodash is not a preferred choice, other utility libraries like Underscore.js or Moment.js could be used as alternatives.

In summary, this benchmark compares the performance of two approaches: the native implementation (using `isArray()`) and the Lodash library's `_.isArray()` function. The results will help developers understand the trade-offs between these approaches in terms of performance, readability, and maintainability.

Lodash.js vs Native isArrary (version: 0)

Comparing performance of: `Native vs Lodash.js filter`

Created: 6 years ago by: Guest

Go to the latest result

Native

Lodash.js filter

Historical Performance Data aggregated from 8 community runs

Desktop Results:

Chrome 8 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Lodash.js vs Native isArrary (version: 0)

Comparing performance of: Native vs Lodash.js filter

Created: 6 years ago by: Guest

Go to the latest result

Native

Lodash.js filter

Historical Performance Data aggregated from 8 community runs

Desktop Results:

Chrome 8 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Related benchmarks

Comparing performance of: `Native vs Lodash.js filter`