Benchmark: uri Lodash.isEqual vs JSON.stringify Equality Comparison for Shallow 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 = {
  description: 'Creates a deep copy of source, which should be an object or an array.',
  myNumber: 123456789,
  myBoolean: true,
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  }
};
window.bar = {
  description: 'Creates a deep copy of source, which should be an object or an array.',
  myNumber: 123456789,
  myBoolean: true,
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  }
};

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:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:120.0) Gecko/20100101 Firefox/120.0

Browser/OS: Firefox 120 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
_.isEqual	951961.3 Ops/sec
JSON.stringify	1107951.1 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark compares the performance of two equality checks: `JSON.stringify` and `_`.isEqual` (a function from the Lodash library). Both tests are run on shallow arrays of strings, with similar input data.

**Options Compared**

1. **JSON.stringify**: This method converts a JavaScript value to a JSON string. In this case, it's used for equality comparison by comparing two objects.
2. **_.isEqual` (Lodash function)**: This function checks if two values are equal.

**Pros and Cons of Each Approach**

**JSON.stringify**

Pros:

* Simple to implement
* Fast execution time

Cons:

* Not designed for deep object comparisons, can lead to performance issues with complex data structures
* May not work correctly for non-JSON-like data types (e.g., dates, functions)
* Can be slower than native equality checks for simple data types

**_.isEqual` (Lodash function)**

Pros:

* Designed specifically for deep object comparisons
* Handles a wide range of data types and edge cases
* Often faster than JSON.stringify for complex data structures

Cons:

* May have additional overhead due to its implementation
* Can be slower than native equality checks for simple data types

**Library Used: Lodash**

Lodash is a popular JavaScript utility library that provides a collection of functions for various tasks, including array manipulation, string manipulation, and object manipulation. In this case, the `_`.isEqual` function is used to compare two values.

**Special JS Feature/Syntax Not Mentioned**

None mentioned in this benchmark.

**Other Alternatives**

1. **Native Equality Checks**: JavaScript has built-in equality checks using the `===` operator.
2. **JSON.parse(JSON.stringify(obj))**: This method can be used for deep object comparisons, but it's not as efficient as Lodash's `_`.isEqual`.
3. **Other libraries**: Other libraries, such as Underscore.js or Moment.js, may also provide equality check functions.

Keep in mind that the choice of equality check function depends on the specific use case and performance requirements.

Related benchmarks:

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

Test on isEqual performance

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

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