React.useRef() hook solves 2 issues: holds mutable values that persist between component renderings and reference DOM elements.

7 interview questions to challenge your knowledge on "this" keyword in JavaScript.

How to use the decorator pattern to enhance the possibilities and flexibily of fetch() API.

I compiled a list of 7 interesting and increasingly challenging questions on JavaScript closures. Can you answer them?

A method is a function that belongs to an object and executed with that object as a context.

array.sort() method, when invoked without arguments, doesn't sort numbers as you might expect.

Be careful when using React.useEffect() hook because it can generate infinite loops.

array.at(index) method in JavaScript accesses array items at positive and (finally!) at negative indexes.

What's the difference between a DOM node and an element? Let's find out!

Why an immidiately resolved promise is faster then an immediate timeout?