Benchmark: Lodash.isEqual vs JSON.stringify Equality Comparison for Deep Array of Strings.

HTML Preparation code:

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

Script Preparation code:

window.foo = {"page":1,"sort":"-transaction_at","filter":{"type":"deposit","opportunity_id":"8"}};
window.bar = {"page":1,"sort":"-transaction_at","filter":{"type":"deposit","opportunity_id":"8"}};

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

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

LLMs can make mistakes. Check important info.

Let's dive into the benchmark and explain what's being tested.

**Overview**

The provided JSON represents a JavaScript microbenchmark on MeasureThat.net. The benchmark is designed to compare the performance of two functions: `_.isEqual` from Lodash and a simple comparison using `JSON.stringify`.

**What is being tested?**

In this benchmark, we're testing the performance difference between two approaches for comparing two objects:

1. **Lodash's `_.isEqual`**: This function takes two arguments and returns `true` if they are equal in value and structure, and `false` otherwise.
2. **Simple comparison using `JSON.stringify`**: This approach converts both objects to strings using `JSON.stringify` and then compares the resulting strings.

**Options compared**

The benchmark is comparing two options:

* Lodash's `_.isEqual`
* Simple comparison using `JSON.stringify`

**Pros and Cons of each approach:**

1. **Lodash's `_.isEqual`**:
	* Pros:
		+ Designed specifically for equality checks, making it efficient and accurate.
		+ Supports deep object comparisons.
	* Cons:
		+ Requires an additional library (Lodash) to be included in the test environment.
		+ May have a higher overhead due to its library dependencies.
2. **Simple comparison using `JSON.stringify`**:
	* Pros:
		+ No additional libraries required.
		+ Simple and straightforward implementation.
	* Cons:
		+ Less efficient than Lodash's `_.isEqual`, as it converts objects to strings, which can be slow for large data structures.
		+ May not work correctly for all object types (e.g., dates, regex patterns).

**Library:**

In the benchmark, the library used is Lodash, specifically version 4.17.4. Lodash provides a set of utility functions for common tasks, including equality checks.

**Special JS feature or syntax:**

There are no special JavaScript features or syntaxes being tested in this benchmark.

**Other alternatives:**

If you were to implement your own comparison function using `JSON.stringify`, here's an example:
```javascript
function compareObjects(a, b) {
  return JSON.stringify(a) === JSON.stringify(b);
}
```
Keep in mind that this approach is less efficient than Lodash's `_.isEqual` and may not work correctly for all object types.

In summary, the benchmark is designed to evaluate the performance of two different approaches for comparing objects: Lodash's `_.isEqual` and simple comparison using `JSON.stringify`. The benchmark highlights the trade-offs between these approaches in terms of efficiency, accuracy, and overhead.

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/111.0.0.0 Safari/537.36

Browser/OS: Chrome 111 on Windows

View result in a separate tab

Test name	Executions per second
_.isEqual	617657.6 Ops/sec
JSON.stringify	592157.8 Ops/sec

Related benchmarks:

Lodash.isEqual vs JSON.stringify Equality Comparison for Deep Array of Strings. (version: 0)

Test on isEqual performance

Comparing performance of: _.isEqual vs JSON.stringify

Created: 5 years ago by: Guest

Jump to the latest result

_.isEqual

JSON.stringify

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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