Benchmark: Object Literal vs Object as Function

Tests:

Object Literal
var objLiteral = { a: function() { console.log('execute A'); }, b: function() { console.log('execute B'); }, c: function() { console.log('execute C'); } } objLiteral['a'](); objLiteral['b'](); objLiteral['c']();
Object as Function
var objFunction = function() { var a = function() { console.log('execute A'); }, b = function() { console.log('execute B'); }, c = function() { console.log('execute C'); }; return { a: a, b: b, c: c }; } objFunction().a(); objFunction().b(); objFunction().c();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object Literal
Object as Function

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what is being tested.

**Benchmark Description**

The benchmark compares two approaches to creating objects in JavaScript: object literals and objects as functions. Object literals are created using curly braces (`{}`) and define properties directly, while objects as functions use a function expression with an object return type.

**Options Compared**

Two options are compared:

1. **Object Literal**: Creating an object using an object literal (e.g., `var objLiteral = { ... }`).
2. **Object as Function**: Creating an object using a function expression and returning the object (e.g., `var objFunction = function() { ... } return { ... };`).

**Pros and Cons**

**Object Literal:**

Pros:

* Easier to read and understand, especially for simple objects.
* More intuitive syntax.

Cons:

* May not be as efficient, as the JavaScript engine needs to parse and execute the entire object definition at once.
* Can lead to slower performance due to additional parsing and compilation steps.

**Objects as Functions:**

Pros:

* Can be more efficient, as the JavaScript engine can parse and execute each property individually.
* Allows for more flexibility in defining complex objects with dynamic properties.

Cons:

* More verbose syntax, making it harder to read and understand, especially for simple objects.
* May lead to slower performance due to additional parsing and compilation steps.

**Library Usage**

None of the test cases use any libraries or external dependencies. The benchmark focuses solely on the JavaScript engine's behavior when creating objects using different approaches.

**Special JS Features/Syntax**

The benchmark does not mention any special JavaScript features or syntax that are specific to certain browsers or versions.

**Other Alternatives**

There are other alternatives for creating objects in JavaScript, such as:

* Using constructors (e.g., `var objLiteral = new Object() ...`)
* Using class declarations (e.g., `class MyClass { ... } var obj = new MyClass();`)

However, these alternatives are not explicitly mentioned in the benchmark, and the focus remains on comparing object literals and objects as functions.

In summary, the benchmark is designed to compare the performance of two different approaches to creating objects in JavaScript: object literals and objects as functions. The results can help developers understand how their choice of approach might impact performance, depending on the specific use case and browser version.

Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36

Browser/OS: Chrome 67 on Windows

View result in a separate tab

Test name	Executions per second
Object Literal	54198.3 Ops/sec
Object as Function	54831.3 Ops/sec

Related benchmarks:

Object Literal vs Object as Function (version: 0)

Comparing performance of: Object Literal vs Object as Function

Created: 6 years ago by: Guest

Jump to the latest result

Object Literal

Object as Function

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):