Benchmark: Lodash.isEqual vs JSON.stringify Equality Comparison for simple objects

HTML Preparation code:

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

Script Preparation code:

window.foo = {a: 2, b: { c: 4 }};
window.bar = {a: 2, b: { c: 4 }};

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:

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

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Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

The provided JSON represents two benchmark test cases for comparing the performance of Lodash's `isEqual` function with the built-in equality comparison using `JSON.stringify`. I'll break down what's being tested, compare options, pros and cons, and discuss libraries and special features used in these tests.

**What is being tested?**

The primary goal of these benchmarks is to determine which approach (Lodash's `isEqual` or built-in `JSON.stringify`) is faster for simple object comparisons. The tests are designed to measure the execution time of each method.

**Options compared:**

1. **Lodash's `isEqual`**: This function is a utility function in Lodash that compares two values and returns `true` if they are equal, and `false` otherwise.
2. **Built-in `JSON.stringify` equality comparison**: The built-in `JSON.stringify` method can be used to compare objects for equality by comparing the JSON representations of each object.

**Pros and Cons:**

1. **Lodash's `isEqual`**:
	* Pros:
		+ Provides a more comprehensive way of comparing complex objects, including nested structures.
		+ May perform better than `JSON.stringify` on certain data types (e.g., arrays).
	* Cons:
		+ Requires an external library (Lodash) to be included in the test environment.
		+ May introduce additional overhead due to the need to check if a value is null, undefined, or a primitive type.
2. **Built-in `JSON.stringify` equality comparison**:
	* Pros:
		+ Does not require any external libraries.
		+ Is often implemented in native code, which can lead to better performance.
	* Cons:
		+ Only works for simple object comparisons and may not be suitable for complex objects or nested structures.

**Library:**

The `JSON.stringify` comparison uses the built-in `JSON.stringify` method. This method converts a value into a JSON string and allows for equality comparison between two strings.

**Special feature: None**

There are no special features or syntax used in these tests.

**Other alternatives:**

If you're interested in comparing other methods, here are some alternative approaches:

1. **Recursion-based object comparison**: Implement your own recursive function to compare objects.
2. **Prototype chain comparison**: Compare objects by traversing their prototype chains.
3. **JSON parsing and string matching**: Parse the JSON representations of both objects and compare them using a custom string-matching algorithm.

Keep in mind that these alternatives may not be as efficient or reliable as `Lodash's `isEqual` or built-in `JSON.stringify` equality comparison, depending on your specific use case.

Related benchmarks:

Lodash.isEqual vs JSON.stringify Equality Comparison for simple objects (version: 0)

Test on isEqual performance

Comparing performance of: _.isEqual vs JSON.stringify

Created: 4 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):