Benchmark: Object Comparaison in JS

Script Preparation code:

var obj = {'Foo': 23, 'Bar': 11, 'Baz': 4};
var obj2 = {'Foo': 23, 'Bar': 11, 'Baz': 4};

Tests:

With entries() and toString()
Object.entries(obj).toString() === Object.entries(obj2).toString()
With stringify()
JSON.stringify(obj) === JSON.stringify(obj2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
With entries() and toString()
With stringify()

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36

Browser/OS: Chrome 107 on Windows

View result in a separate tab

Test name	Executions per second
With entries() and toString()	378713.3 Ops/sec
With stringify()	972982.1 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the benchmark and explain what's being tested, compared, and considered.

**Benchmark Overview**

The benchmark is designed to compare two approaches for comparing objects in JavaScript: `Object.entries()` with `toString()` and `JSON.stringify()`. The goal is to determine which approach is faster and more efficient.

**Options Compared**

Two options are compared:

1. **`Object.entries(obj).toString() === Object.entries(obj2).toString()`**: This option uses the `entries()` method to convert the object's key-value pairs to an array of key-value pairs, converts each pair to a string using `toString()`, and then compares the resulting strings.
2. **`JSON.stringify(obj) === JSON.stringify(obj2)`**: This option uses the `stringify()` function from the built-in `JSON` object to convert the objects to JSON strings and compare them.

**Pros and Cons**

**1. `Object.entries()` with `toString()`:**

Pros:

* More readable code, as it directly converts key-value pairs to strings.
* Can be more intuitive for developers familiar with `entries()`.

Cons:

* May incur additional overhead due to string conversion.
* Comparison may not be accurate if the object's properties are not properly serialized.

**2. `JSON.stringify()`:**

Pros:

* Efficient, as it uses a optimized algorithm to serialize objects.
* Accurate, as it handles complex data types and edge cases.

Cons:

* May produce less readable code, as it converts objects to JSON strings.
* Can be slower due to the overhead of serializing objects.

**Library/Function Used**

The `JSON` object's `stringify()` function is used in both test cases. This function takes an object as input and returns a JSON string representation of that object.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntaxes being tested in this benchmark. The focus is on the performance comparison between two different approaches for comparing objects.

**Other Alternatives**

If you wanted to add additional test cases, you could consider exploring other approaches, such as:

* Using a library like Lodash's `isEqual()` function
* Implementing a custom serialization algorithm
* Comparing objects using a more specialized data structure, like a trie or a graph

Keep in mind that the performance of these alternatives may vary depending on the specific use case and requirements.

I hope this explanation helps! Let me know if you have any further questions.

Related benchmarks:

Object Comparaison in JS (version: 0)

Object entries converted to string vs json's stringify

Comparing performance of: With entries() and toString() vs With stringify()

Created: 2 years ago by: Guest

Jump to the latest result

With entries() and toString()

With stringify()

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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