Benchmark: Empty object stringify or keys

Tests:

JSON.stringify
const obj = {}; JSON.stringify(obj) === "{}"
Object.keys
const obj = {}; Object.keys(obj).length === 0

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JSON.stringify
Object.keys

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36

Browser/OS: Chrome 89 on Windows

View result in a separate tab

Test name	Executions per second
JSON.stringify	2869549.8 Ops/sec
Object.keys	5924343.0 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared, and other considerations.

**Benchmark Definition**

The benchmark definition is an empty object with no specific script or HTML preparation code required. This suggests that the benchmark is designed to test the behavior of JavaScript engines when dealing with simple objects and functions like `JSON.stringify()` and `Object.keys()`.

**Individual Test Cases**

There are two test cases:

1. **`JSON.stringify`**: The benchmark definition creates an empty object `const obj = {};` and checks if its stringified representation is equal to `""`. This test case is designed to measure the performance of JavaScript engines when dealing with the `JSON.stringify()` function, which serializes objects into a JSON format.
2. **`Object.keys()`**: The benchmark definition creates an empty object `const obj = {};` and checks if the length of its `keys()` method returns 0. This test case is designed to measure the performance of JavaScript engines when dealing with the `Object.keys()` function, which returns an array of a given object's own enumerable property names.

**Comparison**

The benchmark is comparing the performance of two different approaches:

1. **`JSON.stringify()`**: The engine needs to serialize the object into a JSON format, which involves converting the object's properties and values into a string representation.
2. **`Object.keys()`**: The engine needs to return an array of property names for the given object.

**Pros and Cons**

Here are some pros and cons for each approach:

1. **`JSON.stringify()`**:
	* Pros: Efficient for serializing objects, as it only involves iterating over the object's properties.
	* Cons: May be slower due to the overhead of serializing the entire object, including its properties and values.
2. **`Object.keys()`**:
	* Pros: Only requires iterating over the object's properties, making it potentially faster.
	* Cons: Requires accessing the property names, which may involve additional overhead.

**Libraries and Special JS Features**

None of the test cases use a library or special JavaScript feature that needs to be explained. The benchmark is focused on testing the performance of basic JavaScript functions like `JSON.stringify()` and `Object.keys()`.

**Other Considerations**

The benchmark measures the execution rate per second for each test case, which provides insight into how fast the engine can execute these functions. This information can be useful for developers who want to optimize their code's performance or for browser vendors who want to improve their engine's performance.

**Alternatives**

If you're interested in exploring alternative benchmarks or testing different JavaScript engines, here are some alternatives:

1. **GC benchmark**: Measures the performance of a garbage collector (GC) by running multiple iterations of object creation and deallocation.
2. **Web Worker benchmark**: Tests the performance of web workers, which are designed to run in parallel with the main thread.
3. **Canvas drawing benchmark**: Measures the performance of JavaScript engines when rendering graphics using the Canvas API.

Keep in mind that these alternatives may not be directly related to testing `JSON.stringify()` or `Object.keys()`, but they can provide valuable insights into the performance and capabilities of different JavaScript engines.

Related benchmarks:

Empty object stringify or keys (version: 0)

Comparing performance of: JSON.stringify vs Object.keys

Created: 4 years ago by: Guest

Jump to the latest result

JSON.stringify

Object.keys

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):