Benchmark: Variable in array vs check variables individually

Script Preparation code:

var myNumber = 5;

Tests:

Variable in array
const result = [0,1,2,3,4,5].includes(myNumber);
Variables indidually
const result = myNumber === 0 || myNumber === 1 || myNumber === 2 || myNumber === 3 || myNumber === 4 || myNumber === 5;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Variable in array
Variables indidually

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser/OS: Chrome 122 on Windows

View result in a separate tab

Test name	Executions per second
Variable in array	12949634.0 Ops/sec
Variables indidually	2999885.0 Ops/sec

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

LLMs can make mistakes. Check important info.

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

**Benchmark Description**

The benchmark is designed to compare two approaches: using an array method (`includes`) versus checking variables individually.

**Options Being Compared**

Two options are being compared:

1. **Using an array method**: The `includes` method is used to check if a value exists in an array.
2. **Checking variables individually**: Each variable is checked separately using the `===` operator (equality operator).

**Pros and Cons of Each Approach**

* Using an array method (`includes`):
	+ Pros:
		- More concise and readable code
		- Can be faster for large arrays, as it uses a optimized algorithm under the hood
	+ Cons:
		- May not work correctly if the value is not a number (e.g., `NaN` or `undefined`)
		- May not be suitable for very small arrays or sparse arrays
* Checking variables individually:
	+ Pros:
		- Works correctly with any type of variable, including non-numeric values
		- Easy to understand and debug
	+ Cons:
		- More verbose code
		- Can be slower due to the need to perform multiple checks

**Library Used**

The `includes` method uses a library or built-in JavaScript function that is optimized for performance. The exact implementation details are not provided, but it's likely using a combination of hashing and binary search algorithms.

**Special JS Feature/Syntax**

No special JS feature or syntax is being tested in this benchmark. It's focusing on the two basic approaches to achieve similar results.

**Other Alternatives**

If you need to compare values with other libraries or methods, some alternatives might include:

* Using `some()` and `every()` methods: These methods are also part of the Array.prototype and can be used for similar checks.
* Using regular expressions (regex): Regex can be used to match a specific pattern in an array, but it's often more verbose than the `includes` method.

**Benchmark Preparation Code**

The preparation code is setting up a variable `myNumber` with the value 5. This is done using the script preparation code: `var myNumber = 5;`.

Related benchmarks:

Variable in array vs check variables individually (version: 0)

Comparing performance of: Variable in array vs Variables indidually

Created: 2 years ago by: Guest

Jump to the latest result

Variable in array

Variables indidually

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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