Benchmark: Object Creation: key.value vs {}

Tests:

Property.Value Based
var a = {}; a.test1 = 'A'; a.test2 = 'B'; a.test3 = 'C'; a.test4 = 'D';
Nested Property / Value {} Based
var a = { test1: 'A', test2: 'B', test3: 'C', test4: 'D' };

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Property.Value Based
Nested Property / Value {} Based

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

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

**Benchmark Definition Json**

The benchmark definition json contains basic information about the benchmark:

* `Name`: The name of the benchmark, which is "Object Creation: key.value vs {}".
* `Description`: No description is provided for this benchmark.
* `Script Preparation Code` and `Html Preparation Code`: These fields are empty, indicating that no custom code needs to be prepared before running the benchmark.

**Individual Test Cases**

There are two individual test cases:

1. **Property.Value Based**: This test case creates an object `a` with properties using dot notation (e.g., `a.test1 = 'A';`). The benchmark compares the performance of creating objects with properties in this style versus without any specific notation.
2. **Nested Property / Value {} Based**: This test case creates an object `a` with nested properties and values, similar to a JavaScript object literal (e.g., `var a = { test1: 'A', test2: 'B', test3: 'C', test4: 'D' };`). The benchmark compares the performance of creating objects with nested properties versus without using an object literal syntax.

**Libraries and Special Features**

There are no explicit libraries mentioned in the benchmark definition or test cases. However, JavaScript is assumed to be used as the programming language for this benchmark.

**Comparison Options**

The two test cases compare the following:

* **Creation of objects**: Both tests create objects but use different syntax (dot notation vs. object literal).
* **Performance**: The benchmark measures the execution speed of creating these objects in each case.

**Pros and Cons of Different Approaches**

1. **Dot Notation (`a.test1 = 'A';`)**:
	* Pros: Simpler to read and write, especially for large numbers of properties.
	* Cons: May be less efficient due to the need for repeated property assignments.
2. **Object Literal Syntax (`var a = { test1: 'A', test4: 'D' };`)**:
	* Pros: More concise and readable, with better performance due to fewer property assignments.
	* Cons: Less flexible if you only want to create properties one by one.

**Other Considerations**

The benchmark does not account for other factors that might affect object creation performance, such as:

* Object size (number of properties)
* Property values (size and complexity)
* Context switching or garbage collection

Keep in mind that the actual results may vary depending on the specific use case and environment.

**Alternatives**

Other approaches to creating objects could be compared, such as:

* Using `Object.create()` or `Object.extend()` to create objects with inheritance
* Utilizing libraries like Lodash for object creation and manipulation
* Considering different data structures, such as arrays or sets, instead of objects

However, these alternatives are not included in the provided benchmark definition.

Latest run results:

Run details: (Test run date: 8 years ago)

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36

Browser/OS: Chrome 53 on Windows 7

View result in a separate tab

Test name	Executions per second
Property.Value Based	98842848.0 Ops/sec
Nested Property / Value {} Based	99639000.0 Ops/sec

Related benchmarks:

Object Creation: key.value vs {} (version: 1)

Comparing performance of: Property.Value Based vs Nested Property / Value {} Based

Created: 8 years ago by: Registered User

Jump to the latest result

Property.Value Based

Nested Property / Value {} Based

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):