“JavaScript is the language of the Web… this was probably true in 2005. “

Adding JavaScript to a page is very easy. In your HTML file just add a script tag before the body tag is s closing.

You can imagine variables and constants to be like buckets in which you store things for later use.

The first time when I heard about operators I was in second grade...

In JavaScript, the while loop executes as long as the specified condition evaluates to true.

Functions are one of the building blocks of JavaScript. By using functions you can eliminate code duplication make it more modular and easier to use.

An array is an ordered collection of values. Each value is called an element and each has a numeric position in the array, also known as index.

An object is a collection of "key: value" pair. The key is a string and is also known as the "property name", the value can be anything.

Sets it's an object type that was introduced in ES6 that allows to create unique collections of items

In JavaScript all instructions are executed one by one.

The document object model or DOM is a programming interface for HTML and XML documents