Book Image

jQuery HOTSHOT

By : Dan Wellman
Book Image

jQuery HOTSHOT

By: Dan Wellman

Overview of this book

jQuery is used by millions of people to write JavaScript more easily and more quickly. It has become the standard tool for web developers and designers to add dynamic, interactive elements to their sites, smoothing out browser inconsistencies and reducing costly development time.jQuery Hotshot walks you step by step through 10 projects designed to familiarise you with the jQuery library and related technologies. Each project focuses on a particular subject or section of the API, but also looks at something related, like jQuery's official templates, or an HTML5 feature like localStorage. Build your knowledge of jQuery and related technologies.Learn a large swathe of the API, up to and including jQuery 1.9, by completing the ten individual projects covered in the book. Some of the projects that we'll work through over the course of this book include a drag-and-drop puzzle game, a browser extension, a multi-file drag-and-drop uploader, an infinite scroller, a sortable table, and a heat map. Learn which jQuery methods and techniques to use in which situations with jQuery Hotshots.
Table of Contents (18 chapters)
jQuery HOTSHOT
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Determining and saving the environment


In our first task we'll store some information about the current browsing environment, such as the URL of the current page. We'll also parse any attached style sheets looking for media queries.

Prepare for Lift Off

We'll start with our document ready shortcut, as we have in most of our other projects. In the heat-map-client.js file, add the following code:

$(function () {

});

All the additional code we add to this file will go into this callback function.

Engage Thrusters

We'll first set a series of variables that will be used throughout the script. We'll also need to parse any attached style sheets and look for media queries so that we can determine which breakpoints are defined for the different layouts.

Note

Media queries are a way to specify in CSS that a group of styles should only be applied if certain conditions are met, such as the width of the screen. For more information see http://en.wikipedia.org/wiki/Media_queries.

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