JavaScript Function Library

by wd006

A simple, modular, and reusable JavaScript function library providing common math, array, and utility functions.

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NPM Page
GitHub Page

📋 Features

• Basic math operations
• Number checking utilities
• Array manipulation helpers
• Modular ES6 exports for easy usage
• Clear documentation with usage examples

📦 Installation

1- Install the package:

npm install @wd006/js-function-library

2- Add the following to the package.json file in your project folder:

"type": "module"

3- And import individual modules in your project like this:

import { add, subtract } from '@wd006/js-function-library';

⚙️ Requirements

This project is written in JavaScript. To run or test the code locally, the following tools are optional but recommended:

-> Node.js (Comes with NPM) — Execute JavaScript code from the terminal.
-> Git (optional) — Clone or download the repository easily

📖 Functions in the Project

math.js

Function	Description	Example Usage	Example Output
add(a, b)	Adds two numbers	add(2, 3)	5
subtract(a, b)	Subtracts second number from first	subtract(5, 2)	3
multiply(a, b)	Multiplies two numbers	multiply(4, 3)	12
divide(a, b)	Divides first number by second	divide(10, 2)	5
factorial(x)	Calculates the factorial of a number.	factorial(5)	120
isInteger(x)	Returns true if x is an integer	isInteger(3.5)	false
isEven(x)	Checks if number is even	isEven(4)	true
isOdd(x)	Checks if number is odd	isOdd(5)	true
randomInt(min, max)	Generates a random integer in the range	randomInt(3, 7)	5
averageOfArray(array)	Returns the average of a array	averageOfArray([1,2,3])	2

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array.js

Function	Description	Example Usage	Example Output
addToArray(array, element)	Adds element to end of array	addToArray([1,2], 3)	[1, 2, 3]
removeFromArray(array, e)	Removes element from array	removeFromArray([1,2], 2)	[1]
arrayContains(array, e)	Checks if array contains element	arrayContains([1,2], 2)	true
sortArray(array)	Returns a sorted copy of array	sortArray([3,1,2])	[1, 2, 3]
toUpperCase(array)	Converts each element to uppercase	toUpperCase(["a", "B", "c"])	["A", "B", "C"]
toLowerCase(array)	Converts each element to lowercase	toUpperCase(["A", "b", "C"])	["a", "b", "c"]

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📄 License

This project is licensed under the MIT License.
You are free to use, modify, and distribute this project for personal or commercial use.
See the LICENSE file for full details.

🤝 Contributing

Contributions are welcome!
Please feel free to fork the repository, make your changes, and submit a pull request.

📬 Contact

For questions or support:

or open an issue on GitHub.