Benchmark: Object keys - MeasureThat.net

Tests:

Object keys
Object.keys({})
JSON
let object = {} JSON.stringify(object) === JSON.stringify({})

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object keys
JSON

Fastest: N/A

Slowest: N/A

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/131.0.0.0 Safari/537.36

Browser/OS: Chrome 131 on Windows

View result in a separate tab

Test name	Executions per second
Object keys	49129980.0 Ops/sec
JSON	6108751.5 Ops/sec

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

LLMs can make mistakes. Check important info.

I'd be happy to explain the benchmark being tested and provide insights on the options compared, pros and cons of each approach, and other considerations.

**Benchmark Definition**

The benchmark definition is a JSON object that describes a specific test case. In this case, there are two test cases:

1. "Object keys": This test case checks whether using `equal(object, {})` or just `Object.keys(object) === 0` is faster.
2. "JSON": This test case checks the performance of serializing an empty object with `JSON.stringify()`.

**Options Compared**

The benchmark compares two options:

1. **Using `equal()` function**: This function is likely a custom implementation that checks if two objects are equal using some internal logic. The idea behind this approach is to compare the equality of two objects, but it's not a standard way in JavaScript.
2. **Checking `Object.keys(object) === 0`**: This approach simply checks if an object has any keys by comparing the result of `Object.keys()` to 0. If the object is empty, `Object.keys()` will return an empty array, and the comparison will be true.

**Pros and Cons**

1. **Using `equal()` function**:
	* Pros: This approach might provide more accurate results for complex objects with nested properties.
	* Cons: It's not a standard way in JavaScript, which may make it less reliable or harder to maintain.
2. **Checking `Object.keys(object) === 0`**:
	* Pros: This approach is simple, fast, and widely supported across browsers and platforms.
	* Cons: It might not be accurate for objects with nested properties or complex data structures.

**Library Used**

In the "JSON" test case, the library used is **JSON.stringify()**. `JSON.stringify()` is a built-in JavaScript function that converts an object into a JSON string. The purpose of this library is to serialize the empty object and compare it with another serialization result.

**Special JS Feature or Syntax**

There are no specific JS features or syntax mentioned in the benchmark definition. However, it's worth noting that `equal()` function might be a custom implementation, which could indicate that there's some special logic or optimization being applied to the test case.

**Other Alternatives**

If you want to explore alternative approaches for these test cases:

1. For "Object keys", you could also consider using:
	* `Object.keys(object).length === 0`
	* A custom implementation using `for...in` loop and checking if any property is present
2. For the "JSON" test case, you could use different serialization libraries like **Lodash's _toString()` function or a custom implementation.

Keep in mind that these alternatives might not provide significant performance differences or might introduce additional complexity.

I hope this explanation helps you understand the benchmark being tested!

Related benchmarks:

Object keys (version: 0)

Should i use equal(object, {})? Or just Object.keys(object) === 0?

Comparing performance of: Object keys vs JSON

Created: 4 years ago by: Registered User

Jump to the latest result

Object keys

JSON

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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