Book Image

HTML5 Data and Services Cookbook

Book Image

HTML5 Data and Services Cookbook

Overview of this book

HTML5 is everywhere. From PCs to tablets to smartphones and even TVs, the web is the most ubiquitous application platform and information medium bar. Its becoming a first class citizen in established operating systems such as Microsoft Windows 8 as well as the primary platform of new operating systems such as Google Chrome OS. "HTML5 Data and Services Cookbook" contains over 100 recipes explaining how to utilize modern features and techniques when building websites or web applications. This book will help you to explore the full power of HTML5 - from number rounding to advanced graphics to real-time data binding. "HTML5 Data and Services Cookbook" starts with the display of text and related data. Then you will be guided through graphs and animated visualizations followed by input and input controls. Data serialization, validation and communication with the server as well as modern frameworks with advanced features like automatic data binding and server communication will also be covered in detail.This book covers a fast track into new libraries and features that are part of HTML5!
Table of Contents (21 chapters)
HTML5 Data and Services Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Creating a drop-down menu


Drop-down menus are often used in web applications to show extended functionality. Actions that are used less often or useful to a small number of users can be added to the menu, resulting with a cleaner interface.

HTML5 and CSS3 allow us to build drop-down menus written entirely in CSS. We're going to create such a menu in this recipe.

Getting ready

Let's analyze the structure of a drop-down menu. A drop-down menu has an activation button that displays it and one or more items from the following:

  • A regular (action) item

  • A separator item

  • A submenu item (that activates a sub-menu)

Our HTML element structure should reflect the drop-down menu structure. Our CSS code will control the positioning and display of the menu.

We're going to have three buttons showing slightly different, yet structurally same, menus.

The first will have the default behavior—drops down, is left-aligned with a submenu appearing on the right-hand side.

The second will have a modified behavior—right-aligned...