Benchmark: Switch vs Object Literal - no console.log

Script Preparation code:

var animal = "dog"

Tests:

Switch
function test(animal) { switch(animal){ case 'cat': return 'Kitten' case 'cattle': return 'Calf' case 'cheetah': return 'Cub' case 'micio': return 'Ciccio' case 'liro': return 'Piro' case 'gnappo': return 'Guappo' case '1': return '1' case '2': return '2' case '3': return '3' case '4': return '4' case '5': return '5' case '6': return '6' case '7': return '7' case '8': return '8' case '9': return '9' case '10': return '10' case '11': return '11' case '12': return '12' case '13': return '13' case '14': return '14' case '15': return '15' case '16': return '16' case '17': return '17' case '18': return '18' case '19': return '19' case 'dog': return 'Pup' default: return "I don't know that" } } test(animal);
Object Literal
function test(animal) { var babyAnimal = { cat:'Kitten', cattle:'Calf', cheetah:'Cub', micio: 'Ciccio', liro: 'Piro', gnappo: 'Guappo', '1': '1', '2': '2', '3': '3', '4': '4', '5': '5', '6': '6', '7': '7', '8': '8', '9': '9', '10': '10', '11': '11', '12': '12', '13': '13', '14': '14', '15': '15', '16': '16', '17': '17', '18': '18', '19': '19', dog:'Pup' } return babyAnimal[animal] ?? "I don't know that" } test(animal);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Switch
Object Literal

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

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Let's break down the provided benchmark and its options.

**Benchmark Definition**

The benchmark is designed to compare the performance of two approaches:

1. `switch` statement
2. Object Literal (also known as bracket notation) with optional chaining (`??`)

**Options Compared**

The two options being compared are:

* `switch` statement: a traditional, explicit approach that uses a series of `case` statements to determine which branch to execute.
* Object Literal with optional chaining (`??`): an implicit, dynamic approach that uses the `[]` notation to access properties of an object.

**Pros and Cons**

### Switch Statement

Pros:

* Easy to understand and implement
* Can be more efficient for simple cases with a small number of `case` statements
* Can provide better error handling (e.g., catching invalid inputs)

Cons:

* Can become cumbersome and difficult to maintain for large numbers of `case` statements
* May not be as flexible or scalable as other approaches

### Object Literal with Optional Chaining (`??`)

Pros:

* More concise and expressive than traditional `switch` statements
* Provides a more modern, idiomatic way of accessing nested properties
* Can be more efficient for large datasets or complex logic

Cons:

* May have performance overhead due to the additional indirection introduced by optional chaining
* Can lead to unexpected behavior if not used carefully (e.g., when dealing with null or undefined values)

**Library Used**

In this benchmark, the `Object Literal` approach uses the optional chaining operator (`??`) provided by modern JavaScript engines. This operator allows you to access properties of an object in a more concise and expressive way.

**Special JS Feature/Syntax**

None mentioned.

**Other Considerations**

When choosing between these two approaches, consider the following:

* **Readability**: If code readability is your top priority, Object Literal with optional chaining may be a better choice.
* **Performance**: For performance-critical code or large datasets, traditional `switch` statements might be more efficient.
* **Maintainability**: For complex logic or large numbers of cases, consider using an alternative approach (e.g., array-based lookup or other data structures).

**Alternatives**

Some alternatives to the `switch` statement and Object Literal with optional chaining include:

* Array-based lookup: Using an array of values and indices to determine which branch to execute.
* Data-driven approaches: Using external data sources, such as configuration files or databases, to drive logic decisions.
* Other data structures (e.g., trees, graphs): Depending on the specific use case, alternative data structures might provide better performance or scalability.

Related benchmarks:

Switch vs Object Literal - no console.log (version: 0)

Comparing performance of: Switch vs Object Literal

Created: 4 years ago by: Guest

Jump to the latest result

Switch

Object Literal

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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