Chapter 2

Adding in JavaScript


check Understanding JavaScript basics and structure

check Coding with variables, conditional statements, and functions

check Learning about API basics and structure

check Viewing an API request and response

“The best teacher is very interactive.”


JavaScript, one of the most popular and versatile programming languages on the Internet, adds interactivity to websites. You have probably seen JavaScript in action and not even realized it, perhaps while clicking buttons that change color, viewing image galleries with thumbnail previews, or analyzing charts that display customized data based on your input. These website features and more can be created and customized using JavaScript.

JavaScript is an extremely powerful programming language, and this entire book could have been devoted to the topic. In this chapter, you find JavaScript basics, including how to write JavaScript code to perform basic tasks, access data using an API, and program faster using a framework.

What Does JavaScript Do?

JavaScript creates and modifies web page elements and works ...

Get Coding All-in-One For Dummies now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.