Benchmark: lodash has vs lookup

HTML Preparation code:

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

Script Preparation code:

var test = { x: 'hi'}

Tests:

lodash
if (_.has(test, 'x')) return test['x']; return null;
non-lodash
var foo = test['x']; if (foo) { return foo; } return null;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash
non-lodash

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 world of JavaScript microbenchmarks and explore what's being tested in this particular benchmark.

**What is being tested?**

The provided JSON represents a JavaScript benchmark that tests two approaches to checking if an object has a specific property:

1. Using the `lodash` library, specifically the `_.has()` function.
2. A non-lodash approach, which uses a simple `if` statement to check if the property exists.

**Options compared**

The two options being compared are:

* **Lodash Approach**: Uses the `lodash` library's `_.has()` function to check if an object has a specific property. This approach is likely to be faster because it's optimized for performance and can take advantage of caching.
* **Non-Lodash Approach**: Uses a simple `if` statement to check if a property exists in an object. This approach is more verbose but still effective.

**Pros and Cons**

**Lodash Approach:**

Pros:

* Fast and efficient, thanks to optimization by the Lodash library
* Caching can improve performance

Cons:

* Requires the Lodash library to be included in the test environment
* May introduce additional overhead due to the size of the library

**Non-Lodash Approach:**

Pros:

* Lightweight and easy to implement
* Does not require any external libraries

Cons:

* May be slower than the Lodash approach, as it relies on a simple `if` statement
* Requires explicit checks for property existence, which can lead to code duplication

**Other considerations**

In this benchmark, the test environment is using Chrome 109 on a Mac OS X 10.15.7 desktop platform. The executions per second (EPS) values indicate that the non-lodash approach is faster in this specific environment.

**Library used: Lodash**

Lodash is a popular JavaScript library that provides a lot of utility functions, including `_.has()`. Its primary purpose is to provide a set of reusable functions for common programming tasks, making code easier to write and maintain. In this benchmark, the `lodash` library is included in the test environment to enable the use of its `_.has()` function.

**Special JS feature or syntax: None**

There are no special JavaScript features or syntax used in this benchmark.

**Alternatives**

If you're interested in alternative approaches to checking if an object has a specific property, here are a few options:

1. **ES6 Property Check**: You can use the `in` operator to check if a property exists in an object: `if (test['x'] in test) { ... }`
2. **Using `Object.prototype.hasOwnProperty()`**: This method is similar to using `_.has()`, but it's not part of the Lodash library and may be slower.
3. **Using a custom implementation**: You can create your own custom function to check if an object has a specific property, which may offer flexibility and control over performance.

These alternatives can be used as a starting point for creating more comprehensive benchmarks or testing different optimization techniques in JavaScript.

Related benchmarks:

lodash has vs lookup (version: 0)

Comparing performance of: lodash vs non-lodash

Created: 3 years ago by: Guest

Jump to the latest result

lodash

non-lodash

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):