JS Utility Functions - 2026 Collection

// 1. Unique Array: Removes duplicates using Set
const getUnique = (arr) => [...new Set(arr)];

// 2. Slugify: Converts a string to a URL-friendly slug
const slugify = (str) => str.toLowerCase().trim().replace(/[^\w\s-]/g, '').replace(/[\s_-]+/g, '-');

// 3. Chunk Array: Splits an array into smaller arrays of a specific size
const chunk = (arr, size) => Array.from({ length: Math.ceil(arr.length / size) }, (v, i) => arr.slice(i * size, i * size + size));

// 4. Random Range: Generates a random integer between min and max (inclusive)
const randomInt = (min, max) => Math.floor(Math.random() * (max - min + 1)) + min;

// 5. Omit Keys: Returns a new object without the specified keys
const omit = (obj, keys) => Object.fromEntries(Object.entries(obj).filter(([key]) => !keys.includes(key)));

// 6. Deep Clone: A simple modern way to deep clone objects/arrays
const deepClone = (obj) => structuredClone(obj);

// 7. Debounce: Limits how often a function can fire (useful for search inputs)
const debounce = (fn, ms) => {
  let timeoutId;
  return (...args) => { clearTimeout(timeoutId); timeoutId = setTimeout(() => fn(...args), ms); };
};