Benchmark: Lodash.isEqual vs JSON.stringify Equality Comparison for Objects pbnov23

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

window.foo = {id:"059ffc63-3fb1-41e4-8fff-d7062a7c0f23",featureId:24324932,columnId:57599815,value:0,textValue:"",jsonValue:null};
window.bar = {id:"059ffc63-3fb1-41e4-8fff-d7062a7c0f23",featureId:24324932,columnId:57599815,value:0,textValue:"",jsonValue:null};

Tests:

isEqual
_.isEqual(window.foo, window.bar)
JSON.stringify
JSON.stringify(window.foo) === JSON.stringify(window.bar);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
isEqual
JSON.stringify

Fastest: N/A

Slowest: N/A

Latest run results:

No previous 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 on MeasureThat.net.

The provided JSON represents two benchmark test cases: `isEqual` and `JSON.stringify`. These tests compare the equality of two objects, `window.foo` and `window.bar`, using different approaches.

**Test Case 1: isEqual**

This test case uses the `_isEqual` function from the Lodash library. The `_.isEqual` function takes two arguments and returns a boolean indicating whether they are equal or not.

Pros:

* This approach is often considered more accurate, as it takes into account the nuances of JavaScript object equality, such as checking for prototype chains and property order.
* It is also generally faster than other approaches, since it uses a built-in function optimized for performance.

Cons:

* Using an external library like Lodash can add overhead to your benchmark, depending on the size of the library and how well-optimized it is.
* Some developers might not want to include additional dependencies in their project.

**Test Case 2: JSON.stringify Equality Comparison**

This test case uses the `JSON.stringify` function to compare two objects. The idea behind this approach is that if two objects have the same string representation (i.e., the same JSON string), they are considered equal.

Pros:

* This approach does not require an external library, making it more suitable for projects with strict dependencies or size constraints.
* It can be faster than the `_isEqual` function, since `JSON.stringify` is a built-in function that's optimized for performance.

Cons:

* This approach has limitations. If the objects have different prototypes or property orders, `JSON.stringify` might return different strings, leading to false positives or negatives.
* Additionally, this approach can be slower than `_isEqual`, especially for large objects, since it involves serializing and deserializing the data.

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks like array manipulation, string manipulation, and object equality checking. The `_.isEqual` function is one of its most commonly used features, making it an excellent choice for this benchmark.

**Special JS feature/syntax: None mentioned**

In this benchmark, no special JavaScript features or syntax are being tested. However, if there were any custom implementations or experimental features, MeasureThat.net would likely handle them accordingly.

**Other alternatives**

If you're interested in alternative approaches to testing object equality, some options include:

* Using the `===` operator directly: This is a simple and straightforward way to compare two objects using their property values. However, it can be slower than other approaches, especially for large objects.
* Implementing your own object equality function: You could write your own custom function to compare two objects based on specific criteria. While this approach provides more control, it also requires manual implementation and testing.

Keep in mind that the choice of benchmarking strategy ultimately depends on your specific use case, performance requirements, and personal preferences as a developer.

Related benchmarks:

Lodash.isEqual vs JSON.stringify Equality Comparison for Objects pbnov23 (version: 0)

Comparing performance of: isEqual vs JSON.stringify

Created: 2 years ago by: Guest

Jump to the latest result

isEqual

JSON.stringify

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):