Benchmark: Fastest isEmpty(Object)

Script Preparation code:

var xxx = {}

Tests:

object.keys()
Object.keys(xxx).length === 0
JSON.stringify()
JSON.stringify(xxx) === "{}"

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
object.keys()
JSON.stringify()

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36

Browser/OS: Chrome 110 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
object.keys()	6560362.5 Ops/sec
JSON.stringify()	4746517.5 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definition and test cases.

**Benchmark Definition:**

The benchmark is designed to measure the performance of two JavaScript functions: `object.keys()` and `JSON.stringify()`. The script preparation code creates an empty object (`var xxx = {}`). This means that both tests will be measuring the performance of these functions when applied to this specific input - an empty object.

**Test Cases:**

There are only two test cases:

1. **"object.keys()"**: This test case measures the performance of the `object.keys()` function, which returns an array of strings representing the property names in the specified object.
2. **"JSON.stringify()"**: This test case measures the performance of the `JSON.stringify()` function, which converts a JavaScript object into a JSON string.

**Library and Purpose:**

Neither `object.keys()` nor `JSON.stringify()` use external libraries. Instead, they are built-in functions in JavaScript. However, it's worth noting that `JSON.stringify()` uses an internal implementation that relies on the `toString()` method of the object being serialized.

**Special JS Feature or Syntax:**

There is no special JavaScript feature or syntax used in these test cases. They only rely on standard JavaScript language features.

**Other Considerations:**

The benchmark assumes that both tests will be measuring performance under similar conditions, which might not always be the case. For example, if one test requires more memory access than the other, it could affect the results.

**Alternatives:**

There are several alternatives for writing benchmarks:

1. **Benchmarking libraries:** There are many JavaScript benchmarking libraries available, such as Benchmark.js or Microbenchmark.js, which provide a higher level of abstraction and flexibility.
2. **V8 benchmarking tools:** For measuring the performance of V8 JavaScript engine implementations (like Chrome), specialized benchmarking tools like V8's built-in Benchmark Suite or other tools like Google's Benchmarking Tool can be used.

In summary, this benchmark definition is testing two built-in JavaScript functions, `object.keys()` and `JSON.stringify()`, with an empty object as the input. The test cases are measuring their performance in terms of executions per second.

Related benchmarks:

Fastest isEmpty(Object) (version: 0)

You don't need to make add for loops in your test scenarios, the benchmark does it itself.

Comparing performance of: object.keys() vs JSON.stringify()

Created: one year ago by: Guest

Jump to the latest result

object.keys()

JSON.stringify()

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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