How to Do Addition in JavaScript. Performing JavaScript addition may seem like a simple task, until you discover the number of different ways you can add them. Mathematical calculations are often ...

In these courses, he'll introduce you to the DOM, an object-oriented representation of the web page that can be modified with JavaScript to create interactive, dynamic web content.

JavaScript engines in Web browsers have access to the HTML document object model (DOM) and can manipulate HTML elements through the DOM.