Benchmark: obj compare 2 - MeasureThat.net

Tests:

stringify
const obj1 = { test: 'test', test2: true, test3: 1234 }; const obj2 = { test: 'test', test2: true, test3: 1234 }; if (JSON.stringify(obj1) === JSON.stringify(obj2)) console.log('equal!');
keys
const obj1 = { test: 'test', test2: true, test3: 1234 }; const obj2 = { test: 'test', test2: true, test3: 1234 }; if (!Object.keys(obj1).find(k => obj1[k] !== obj2[k])) console.log('equal!');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
stringify
keys

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark and explain what's being tested.

**What is being tested?**

The two individual test cases are designed to measure the performance of JavaScript objects comparison.

Test Case 1: "stringify"
This test checks if two JSON-serialized objects (`obj1` and `obj2`) are equal. The comparison is done using the `JSON.stringify()` function, which converts the object into a string representation.

Test Case 2: "keys"
This test checks if two objects have the same keys with different values, but no missing keys. It uses the `Object.keys()` function to get an array of the object's keys and then checks for equality between the arrays.

**Options compared**

The two test cases compare two approaches:

1. **JSON-serialized comparison**: This approach converts both objects into a string representation using `JSON.stringify()`. This method is simple, but it can be affected by issues like object references, cyclic structures, or non-string values.
2. **Key-based comparison**: This approach compares the keys of both objects using `Object.keys()` and then checks for equality between the resulting arrays. This method is more robust than JSON-serialized comparison, as it doesn't rely on string representation.

**Pros and Cons**

**JSON-serialized comparison:**
Pros:

* Easy to implement
* Fast execution

Cons:

* Can be affected by object references, cyclic structures, or non-string values
* May not work correctly for objects with complex relationships (e.g., arrays within objects)

**Key-based comparison:**
Pros:

* More robust than JSON-serialized comparison
* Handles object references and cyclic structures correctly
* Works well for objects with complex relationships

Cons:

* Can be slower than JSON-serialized comparison due to the additional step of getting the keys
* May require more memory to store the key arrays

**Library usage**

In neither test case is a specific library used. However, `JSON` and `Object` are built-in JavaScript libraries that provide the necessary functions (`stringify()` and `keys()`, respectively).

**Special JS feature or syntax**

There isn't any special JavaScript feature or syntax explicitly mentioned in these test cases.

**Alternatives**

Some possible alternative approaches to compare objects include:

1. **Using `===` directly**: This method would check if both objects have the exact same value at each property, which is not equivalent to a deep object comparison.
2. **Using a library like Lodash's `isEqual()` function**: This method would provide more robust equality checks, handling edge cases and complex relationships.
3. **Using a library like DeepEqual.js**: This method provides more advanced equality checks, including support for arrays, objects, and dates.

Keep in mind that the best approach depends on the specific requirements of your use case.

Related benchmarks:

obj compare 2 (version: 0)

Comparing performance of: stringify vs keys

Created: 7 years ago by: Guest

Jump to the latest result

stringify

keys

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):