Side effect occurs in a program whenever you use an external code in your function, which impacts the function’s ability to perform its task.
The spread operator helps to expand iterables into individual elements. It is effective only when used within an array, function, or object.
Recursion is a method by which a problem gets solved through iteration. This article will use an example to illustrate recursive functions.
The difference between document, data, and code is that a document holds data. Data is a page’s content. And code is a computer’s language.