How to correctly integrate JavaScript utility libraries into your application and minimize the increase of bundle size.

You can replace all occurrences of a string using split and join approach, replace() with a regular expression and the new replaceAll() string method.

Infinity in JavaScript is a special number bigger than any finite number.

JavaScript classes initialize instances with constructors, have fields and methods, permit encapsulation with private fields.

"typeof" and "instanceof" perform the type checking in JavaScript. While they are generally simple to use, make sure to known the edge cases.

How to design React components that are easy to change, maintain, and test? Strive to orthogonal React components.

15 operations on arrays in JavaScript: iterate, map, reduce, concat, slice, clone, search, query, filter, insert, remove, empty, fill, flatten and sort.

React useState() hook manages the state of functional components.

Lifecycle methods, hooks & suspense fetch data in React. The post describes them in examples and demos, distill the benefits and drawbacks of each one.

A closure is a function that captures variables from where it is defined (or its lexical scope).