Benchmark: If vs Object Literal

Script Preparation code:

var str = 'abc';
str = str.charAt(Math.floor(Math.random() * 3));

Tests:

If
if (str === 'a') { console.log('A'); } else if (str === 'b') { console.log('B'); } else { console.log('C'); }
Object Literal
var objLiteral = { a: function() { console.log('A'); }, b: function() { console.log('B'); }, c: function() { console.log('C'); } } objLiteral[str]();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
If
Object Literal

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):

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Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Description**

The benchmark is called "If vs Object Literal". It compares two different approaches to writing conditional logic in JavaScript: using an `if` statement versus creating an object literal with methods. The goal is to measure which approach is faster, i.e., which one can execute the most iterations per second on a given system.

**Test Case 1: If Statement**

The first test case uses a simple `if-else` chain to log 'A', 'B', or 'C' to the console based on the value of the variable `str`. This is the traditional way of writing conditional logic in JavaScript.

```javascript
if (str === 'a') {
  console.log('A');
} else if (str === 'b') {
  console.log('B');
} else {
  console.log('C');
}
```

**Test Case 2: Object Literal**

The second test case uses an object literal to define three methods, `a()`, `b()`, and `c()`, which log 'A', 'B', or 'C' respectively. The method corresponding to the value of `str` is then called. This approach uses a more modern JavaScript technique.

```javascript
var objLiteral = {
  a: function() { console.log('A'); },
  b: function() { console.log('B'); },
  c: function() { console.log('C'); }
};

objLiteral[str]();
```

**Library/Feature Used**

In this benchmark, no external library is used. The code only relies on built-in JavaScript features.

**Pros and Cons of Each Approach**

* **If Statement (Test Case 1)**:
	+ Pros: Simple to write and understand.
	+ Cons: May lead to complex `if-else` chains for multiple conditions.
* **Object Literal (Test Case 2)**:
	+ Pros: Can simplify conditional logic by using a more declarative approach.
	+ Cons: May be less readable than traditional `if-else` statements, especially for small cases.

**Alternative Approaches**

Other alternatives to consider when writing conditional logic in JavaScript include:

* Using a switch statement (in the case of multiple distinct values).
* Creating a function that takes a value and returns a string or performs an action based on that value.
* Utilizing a library like Lodash's `_.cond()` function for more complex conditions.

**Benchmark Results**

The latest benchmark results show that, in this specific test, the `if` statement approach (Test Case 1) executed at approximately 233,197 iterations per second, while the object literal approach (Test Case 2) achieved around 227,921 iterations per second on a desktop system running Chrome 112.

Keep in mind that these results are specific to this particular benchmark and may not reflect real-world performance. The choice between an `if` statement and an object literal should be based on the requirements of your project, such as maintainability, readability, and scalability.

Related benchmarks:

If vs Object Literal (version: 0)

Comparing performance of: If vs Object Literal

Created: 3 years ago by: Guest

Jump to the latest result

If

Object Literal

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):