Benchmark: const a = Object.getPrototypeOf({})

Tests:

const a = Object.getPrototypeOf({})
const a = Object.getPrototypeOf({})
const b = {}
const a = {}

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
const a = Object.getPrototypeOf({})
const b = {}

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/131.0.0.0 Safari/537.36

Browser/OS: Chrome 131 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
const a = Object.getPrototypeOf({})	96258792.0 Ops/sec
const b = {}	236143104.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Definition**

The benchmark definition is a JSON object that represents the code to be tested. In this case, there are two benchmarks:

1. `const a = Object.getPrototypeOf({})`: This benchmark tests the performance of accessing the prototype chain of an empty object.
2. `const b = {}`: This benchmark tests the performance of creating an empty object.

**Script Preparation Code and Html Preparation Code**

The script preparation code and HTML preparation code are optional fields that can be used to set up the environment for the benchmarks. In this case, both fields are null, which means that MeasureThat.net will use its default settings.

**Options Compared**

MeasureThat.net compares two options:

1. `Object.getPrototypeOf({})`: This option tests accessing the prototype chain of an empty object.
2. Creating an empty object (`const b = {}`): This option tests the performance of creating a new object from scratch.

**Pros and Cons of Different Approaches**

Accessing the prototype chain of an empty object can be faster because it's a single lookup operation, whereas creating an empty object involves allocating memory for the object, its properties, and its prototype. However, this approach may not accurately represent real-world scenarios where objects are often created with multiple properties.

Creating an empty object is more representative of real-world usage but may be slower due to the overhead of object creation.

**Library and Purpose**

There is no explicit library mentioned in the benchmark definition. MeasureThat.net uses its own internal implementation for benchmarking JavaScript code.

**Special JS Feature or Syntax**

No special JavaScript features or syntax are used in these benchmarks. They are relatively simple and straightforward examples that focus on testing the performance of basic object creation and prototype chain access.

**Other Alternatives**

If you're looking to create your own JavaScript microbenchmarks, here are some alternatives:

1. BenchmarkJS: A popular benchmarking library for JavaScript.
2. js-benchmark: Another lightweight benchmarking library for JavaScript.
3. perf-bench: A simple benchmarking tool that can be used to measure the performance of JavaScript code.

**Best Practices**

When creating your own microbenchmarks, keep the following best practices in mind:

1. Keep your benchmarks simple and focused on a specific aspect of your code.
2. Use meaningful names for your test cases and benchmarks.
3. Ensure that your benchmarks are representative of real-world usage.
4. Consider using benchmarking libraries or tools to simplify the process.
5. Run your benchmarks multiple times to account for variability and get an accurate average result.

By following these guidelines, you can create effective microbenchmarks that help you optimize and improve the performance of your JavaScript code.

Related benchmarks:

const a = Object.getPrototypeOf({}) (version: 0)

const a = Object.getPrototypeOf({})

Comparing performance of: const a = Object.getPrototypeOf({}) vs const b = {}

Created: 4 years ago by: Guest

Jump to the latest result

const a = Object.getPrototypeOf({})

const b = {}

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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