Benchmark: Switch vs Object Literal extended

Script Preparation code:

var str = 'abcdfghijklmno';
str = str.charAt(Math.floor(Math.random() * 14));

Tests:

Switch
switch (str) { case 'a': console.log('A'); break; case 'b': console.log('B'); break; case 'c': console.log('C'); break; case 'd': console.log('D'); break; case 'f': console.log('F'); break; case 'g': console.log('G'); break; case 'h': console.log('H'); break; case 'i': console.log('I'); break; case 'j': console.log('J'); break; case 'k': console.log('K'); break; case 'l': console.log('L'); break; case 'm': console.log('M'); break; case 'n': console.log('N'); break; case 'o': console.log('O'); break; }
Object Literal
var objLiteral = { a: function() { console.log('A'); }, b: function() { console.log('B'); }, c: function() { console.log('C'); }, d: function() { console.log('D'); }, e: function() { console.log('E'); }, f: function() { console.log('F'); }, g: function() { console.log('G'); }, h: function() { console.log('H'); }, i: function() { console.log('I'); }, j: function() { console.log('J'); }, k: function() { console.log('K'); }, l: function() { console.log('L'); }, m: function() { console.log('M'); }, n: function() { console.log('N'); }, o: function() { console.log(''); } } objLiteral[str]();

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):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks and explore what's being tested on MeasureThat.net.

**Benchmark Overview**

The benchmark compares the performance of two approaches to handle string literals in JavaScript: `switch` statements and object literal notation with functions as values. The test creates a random string of 14 characters, assigns it to a variable, and then uses that string to call either the corresponding case in the `switch` statement or accesses a property on an object literal with that string as its key.

**Options Compared**

The two options being compared are:

1. **Switch Statement**: A traditional `switch` statement uses a value as the condition and executes different blocks of code depending on which value matches.
2. **Object Literal Notation**: The `ObjectLiteral` approach uses an object with functions as values, where each function corresponds to a case in the `switch` statement.

**Pros and Cons**

**Switch Statement**

Pros:

* Easy to read and understand
* Fast lookup times

Cons:

* Can be slower due to the overhead of parsing and executing the switch statement
* Limited flexibility compared to object literal notation

**Object Literal Notation**

Pros:

* More flexible than `switch` statements, as functions can be reused or modified
* Can provide better performance in certain cases, as lookups are typically faster with objects

Cons:

* May require more effort to read and understand due to the use of functions and object literals
* Can lead to higher memory usage if not used carefully

**Library Used**

In this benchmark, no specific JavaScript library is used. The test focuses solely on comparing the performance of `switch` statements versus object literal notation.

**Special JS Feature or Syntax**

The test uses some special features:

1. **String Interpolation**: The test uses template literals (e.g., `\r\n`) and string concatenation (`+`) to manipulate strings.
2. **Random Values**: The test generates a random string of 14 characters using `Math.floor(Math.random() * 14)`.

While these features are not directly related to the performance comparison, they demonstrate that MeasureThat.net is designed to evaluate JavaScript performance under various scenarios.

**Alternatives**

For those interested in alternative approaches or libraries for benchmarking JavaScript performance, consider:

1. **Benchmark.js**: A popular benchmarking library for Node.js and modern browsers.
2. **V8 Benchmark**: A set of benchmarks provided by Google V8, the engine used by Google Chrome.
3. **JavaScript Perfs** (now known as WebAssembly Workbench): An online tool for measuring performance differences between JavaScript implementations.

Keep in mind that each benchmarking library or framework has its strengths and weaknesses, so it's essential to evaluate which one best suits your specific use case.

By understanding the test's objectives and results, you can better appreciate the importance of benchmarking JavaScript performance and make informed decisions when optimizing code for various scenarios.

Related benchmarks:

Switch vs Object Literal extended (version: 0)

Comparing performance of: Switch vs Object Literal

Created: 2 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):