Benchmark: Lodash.js vs Native MAGIC

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 = [1,2,32,5];
//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); }

var myIsEmpty = (obj) => [Object, Array].includes((obj || {}).constructor) && !Object.entries(obj || {}).length;

Tests:

Native
myIsEmpty(arr1);
Lodash.js filter
_.isEmpty(arr1);

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 (iPhone; CPU iPhone OS 18_3_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.1 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 18 on iOS 18.3.2

View result in a separate tab

Test name	Executions per second
Native	6724498.0 Ops/sec
Lodash.js filter	37621412.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Measuring JavaScript performance is a crucial task, and websites like MeasureThat.net provide valuable insights into the efficiency of different approaches.

**Benchmark Overview**

The provided benchmark measures the performance difference between two approaches:

1. **Native MAGIC**: A custom implementation that pushes elements onto an array using a native `for` loop.
2. **Lodash.js filter**: The `isEmpty` function from the popular Lodash library, which is used to check if an object (or array) is empty.

**Options Compared**

The benchmark compares two options:

*   Pushing elements onto an array using a native `for` loop (`arr1`, `arr2`, and `arr3`)
*   Using the `isEmpty` function from Lodash library to check if an object (or array) is empty (`myIsEmpty(arr1)`)

**Pros and Cons of Different Approaches**

### Native MAGIC

Pros:

*   **Control over the loop**: By using a native `for` loop, you have direct control over the iteration process.
*   **Low overhead**: This approach has minimal memory allocation and garbage collection overhead.

Cons:

*   **Inefficiency**: Pushing elements onto an array inside a loop can lead to increased memory allocation and deallocation, resulting in slower performance.
*   **Limited browser support**: Some older browsers might not optimize `for` loops correctly, leading to potential performance issues.

### Lodash.js filter

Pros:

*   **Convenience**: The `isEmpty` function provides a convenient way to check if an object (or array) is empty without having to implement the logic yourself.
*   **Optimized implementation**: Lodash's implementation of `isEmpty` is likely to be optimized for performance.

Cons:

*   **Overhead**: Using a library like Lodash can introduce additional overhead due to function call and method lookup.
*   **Dependence on the library**: Your code becomes dependent on the availability and performance of the Lodash library, which might not always be the case.

**Library: Lodash**

Lodash is a popular JavaScript library that provides various utility functions for tasks like array manipulation, object manipulation, and more. The `isEmpty` function checks if an object (or array) has any keys or elements, returning `true` if empty and `false` otherwise.

**Special JS Feature/ Syntax: None**

This benchmark does not involve any special JavaScript features or syntax. However, using libraries like Lodash can introduce nuances related to dependency management and versioning.

**Alternatives**

If you're interested in exploring alternative approaches to this benchmark, consider the following:

*   **Manual implementation**: Implement the `isEmpty` function yourself without using a library.
*   **Other array manipulation methods**: Compare different methods of manipulating arrays, such as using `Array.prototype.reduce()` or `Array.prototype.every()`.
*   **Async vs. synchronous execution**: Measure the performance difference between executing the benchmark synchronously and asynchronously.

By considering these alternatives and exploring different approaches, you can gain a deeper understanding of JavaScript performance optimization strategies and how to apply them in your own projects.

Related benchmarks:

Lodash.js vs Native MAGIC (version: 0)

Comparing performance of: Native vs Lodash.js filter

Created: 4 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

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