Benchmark: prop set - MeasureThat.net

Script Preparation code:

var data = {};

Tests:

vanilla
data['one'] = 'one'
defineproperty
Object.defineProperty(data, 'one', { value: 'one', configurable: true, enumerable: true, writable: true });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
vanilla
defineproperty

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and explore what's being tested in this benchmark.

**Benchmark Definition**

The benchmark definition provides information about the test case, which is simply setting a property on an object named "data". The property name is "one" and its value is also "one".

There are two different approaches to achieve this:

1. **Vanilla**: This method uses the standard JavaScript assignment operator (`=`) to set the property.
2. **DefineProperty**: This method uses the `Object.defineProperty()` function to define a property on the object.

**Options Compared**

The benchmark is comparing the performance of these two approaches:

* Pros of using `=`:
	+ Simpler and more concise syntax
	+ Typically faster, as it doesn't require a function call or object creation
* Cons of using `=`
	+ Less explicit and potentially less readable for complex property definitions
* Pros of using `Object.defineProperty()`
	+ More explicit and flexible way to define properties
	+ Allows setting additional attributes like `configurable`, `enumerable`, and `writable`

**Pros and Cons**

Using the assignment operator (`=`) is generally faster, but it may be less readable for complex property definitions. Using `Object.defineProperty()` provides more control over property behavior but comes at a slightly higher cost.

In this specific case, both approaches should be relatively fast, as they are both simple assignments to a single property.

**Other Considerations**

Both methods use a constant assignment, which means the value of the property is not dependent on any variables or conditions. This simplifies the benchmarking process and helps isolate the performance differences between the two approaches.

**Library Used (none)**

There is no external library used in this benchmark.

**Special JS Feature or Syntax**

There are no special JavaScript features or syntax used in this benchmark. The focus is solely on comparing the performance of two simple assignment methods.

**Other Alternatives**

If you were to create a similar benchmark, you could explore other approaches, such as:

* Using `Object.assign()` instead of `=`
* Setting properties using arrow functions (e.g., `data => data.one = 'one'`)
* Using destructuring assignments (e.g., `const { one } = data; data.one = 'one';`)

Keep in mind that the performance differences between these alternatives might be negligible, and the focus would shift from measuring property assignment speed to exploring other aspects of JavaScript.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36

Browser/OS: Chrome 96 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
vanilla	14643515.0 Ops/sec
defineproperty	2706279.2 Ops/sec

Related benchmarks:

prop set (version: 0)

Comparing performance of: vanilla vs defineproperty

Created: 2 years ago by: Guest

Jump to the latest result

vanilla

defineproperty

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):