Utility Functions in JavaScript

Utility Functions in JavaScript that are commonly used in Application

Table of Contents

• Installation
• Usage
• List of Functions
• License

Installation

npm i utils-utilityfunctions

List

String Manipulation

• capitalize,
• truncate,
• generatingRandomString
• isEmpty,
• format,

Array Manipulation

• shuffle,
• unique,
• chunk,
• flatten,

Number Manipulation

• clamp,
• roundTo,
• randomInt,

Date/Time Manipulation

• formatDate,
• isValidDate,
• calculateAge,

Object Manipulation

• deepClone,
• merge,
• pick, Validation
• isEmail,
• isURL,
• isNumeric,

Miscellaneous

• debounce,
• throttle,
• uuid,

Usage

const utils = require("utils-utilityfunctions");
//OR directly access the functions.
const { capitalize, truncate } = require("utils-utilityfunctions");

// String Manipulation
console.log(capitalize("hello")); // Output: 'Hello'
console.log(truncate("Lorem ipsum dolor sit amet", 10)); // Output: 'Lorem ipsu...'
console.log(isEmpty("")); // Output: true
console.log(format("Hello {0}!", "world")); // Output: 'Hello world!'
console.log(generatingRandomString(5)); // Output: ' Ac30d'
// Array Manipulation
console.log(shuffle([1, 2, 3, 4, 5])); // Output: shuffled array
console.log(unique([1, 2, 2, 3, 3, 4, 5])); // Output: [1, 2, 3, 4, 5]
console.log(chunk([1, 2, 3, 4, 5], 2)); // Output: [[1, 2], [3, 4], [5]]
console.log(flatten([[1, 2], [3, 4], [5]])); // Output: [1, 2, 3, 4, 5]

// Number Manipulation
console.log(clamp(5, 1, 10)); // Output: 5
console.log(roundTo(3.14159, 2)); // Output: 3.14
console.log(randomInt(1, 10)); // Output: random integer between 1 and 10

// Date/Time Manipulation
console.log(formatDate(new Date(), "YYYY-MM-DD")); // Output: formatted date string
console.log(isValidDate("2022-03-28")); // Output: true
console.log(calculateAge("1990-01-01")); // Output: calculated age

// Object Manipulation
console.log(deepClone({ foo: "bar" })); // Output: deep clone of object
console.log(merge({ a: 1 }, { b: 2 })); // Output: merged object
console.log(pick({ a: 1, b: 2, c: 3 }, ["a", "c"])); // Output: { a: 1, c: 3 }

// Validation
console.log(isEmail("[email protected]")); // Output: true
console.log(isURL("https://www.truemedit.com")); // Output: true
console.log(isNumeric("123")); // Output: true

// Miscellaneous
const debouncedFunc = debounce(
  () => console.log("Debounced function called"),
  1000
);
debouncedFunc(); // This will log after 1 second
const throttledFunc = throttle(
  () => console.log("Throttled function called"),
  1000
);
throttledFunc(); // This will log immediately
console.log(uuid()); // Output: UUID string

License