Book Image

Learning Responsive Data Visualization

By : Christoph Körner
Book Image

Learning Responsive Data Visualization

By: Christoph Körner

Overview of this book

Using D3.js and Responsive Design principles, you will not just be able to implement visualizations that look and feel awesome across all devices and screen resolutions, but you will also boost your productivity and reduce development time by making use of Bootstrap—the most popular framework for developing responsive web applications. This book teaches the basics of scalable vector graphics (SVG), D3.js, and Bootstrap while focusing on Responsive Design as well as mobile-first visualizations; the reader will start by discovering Bootstrap and how it can be used for creating responsive applications, and then implement a basic bar chart in D3.js. You will learn about loading, parsing, and filtering data in JavaScript and then dive into creating a responsive visualization by using Media Queries, responsive interactions for Mobile and Desktop devices, and transitions to bring the visualization to life. In the following chapters, we build a fully responsive interactive map to display geographic data using GeoJSON and set up integration testing with Protractor to test the application across real devices using a mobile API gateway such as AWS Device Farm. You will finish the journey by discovering the caveats of mobile-first applications and learn how to master cross-browser complications.
Table of Contents (16 chapters)
Learning Responsive Data Visualization
About the Author
About the Reviewer

Using an event system

In many of our daily systems and programming languages, the interaction of different instances is handled by events and event listeners (these are also called event handlers or callbacks). Usually, one part of an application or system triggers a certain event and another part of the application or systems—that listens for this event—executes the event listener for the specified event.

Let's think about a simple example in JavaScript. We want to call a resize function whenever a resize event of the browser occurs. Therefore, we have to create an event listener that waits (listens) for the resize event of the browser window and executes the resize() event listener whenever the event occurs. This function is as follows:

window.addEventListener('resize', function(event){

This looks quite simple, and it is very easy to understand. The only thing we have to know is which events exist on which elements (in which browsers). You have already learned in a previous...