Benchmark: Lodash.isArray vs Array.isArray

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

function getRandomInt(max) {
  return Math.floor(Math.random() * Math.floor(max));
}

var arr = [];
for(var i = 0; i < 5000; i++){
  arr.push({value:getRandomInt(100)});
}

Tests:

lodash isArray
_.isArray(arr);
Array isArray
Array.isArray(arr)

Historical Performance Data aggregated from 159 community runs

Desktop Results:

Chrome 142 runs

Array isArray

10.8M/s

lodash isArray

10.3M/s

View exact numbers

✓ Array isArray: 10,827,014 ops/sec
• lodash isArray: 10,311,758 ops/sec

Firefox 17 runs

lodash isArray

209.5M/s

Array isArray

206.1M/s

View exact numbers

✓ lodash isArray: 209,455,328 ops/sec
• Array isArray: 206,102,800 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
lodash isArray
Array isArray

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

Browser/OS: Chrome 136 on Mac OS X 10.15.7

View result in a separate tab

lodash isArray

240.1M/s

Array isArray

236.8M/s

View exact numbers

Test name	Executions per second
✓ lodash isArray	240,070,464 Ops/sec
Array isArray	236,777,168 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 benchmark and its components.

**Benchmark Overview**

The benchmark is designed to compare the performance of two approaches: using the Lodash library (`_.isArray(arr)`) versus the native `Array.isArray()` method in JavaScript.

**Options Compared**

There are only two options being compared:

1. **Lodash with _.isArray()**: This approach uses the Lodash library, a popular utility library for functional programming in JavaScript.
2. **Native Array.isArray()**: This approach uses the built-in `Array.isArray()` method provided by the JavaScript language.

**Pros and Cons**

**Lodash with _.isArray():**

Pros:

* Easy to read and maintain code
* Well-documented and widely adopted library
* Provides additional functionality beyond just array checking

Cons:

* Introduces an external dependency (the Lodash library)
* May incur a performance overhead due to the library's size and complexity
* May not be suitable for all use cases, especially those that require direct access to native JavaScript functions.

**Native Array.isArray():**

Pros:

* Lightweight and optimized for performance
* Directly accessing native JavaScript functionality
* No external dependencies or potential performance overhead

Cons:

* May have a steeper learning curve due to its simplicity
* Limited functionality compared to Lodash
* May not be compatible with older browsers or environments that don't support `Array.isArray()`.

**Other Considerations**

The benchmark also considers the following factors:

* **Random data generation**: The benchmark uses a random array of 5000 objects, each containing an integer value between 0 and 100. This helps to distribute the performance tests evenly across different scenarios.
* **JavaScript version**: Although not explicitly stated in the benchmark definition, it's likely that the benchmark was run on a recent JavaScript engine (e.g., V8 in Chrome).

**Library and its Purpose**

In this case, Lodash is used as a utility library for functional programming. The `_.isArray()` function checks whether an object is an array, similar to the native `Array.isArray()` method.

**Special JS Feature or Syntax**

There doesn't appear to be any special JavaScript feature or syntax being tested in this benchmark. However, it's worth noting that some modern JavaScript engines (e.g., V8) have introduced new language features and optimizations that may affect performance. If such features were being tested, they might impact the results.

**Other Alternatives**

Some alternative approaches to comparing array checking methods could include:

* Using a different utility library (e.g., Immer.js)
* Implementing custom array checking logic
* Comparing the performance of other JavaScript libraries or frameworks that provide array checking functionality.

Lodash.isArray vs Array.isArray (version: 0)

Comparing performance of: `lodash isArray vs Array isArray`

Created: 5 years ago by: Guest

Go to the latest result

lodash isArray

Array isArray

Historical Performance Data aggregated from 159 community runs

Desktop Results:

Chrome 142 runs

Firefox 17 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.isArray vs Array.isArray (version: 0)

Comparing performance of: lodash isArray vs Array isArray

Created: 5 years ago by: Guest

Go to the latest result

lodash isArray

Array isArray

Historical Performance Data aggregated from 159 community runs

Desktop Results:

Chrome 142 runs

Firefox 17 runs

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 isArray vs Array isArray`