10 Useful JavaScript Utility Functions Every Developer Should Know

JavaScript utility functions can significantly enhance development efficiency by simplifying common tasks, improving code readability, and reducing errors. A deep clone function ensures that nested objects or arrays are fully copied, preventing unintended mutations of the original data. A format number function enhances user experience by adding commas for thousands or fixing decimal places. A capitalize function capitalizes the first letter of a string. A flatten array function returns a new array with all sub-arrays concatenated. A debounce function delays the execution of a function until a certain amount of time has passed. A random hex color function generates a random hex color code. A check if object is empty function checks if an object is empty. A convert query string to object function converts a query string into a usable object. Finally, a generate UUID function generates a unique identifier that can be used for various purposes.