Book Image

Learning jQuery 3 - Fifth Edition

By : Jonathan Chaffer, Karl Swedberg
Book Image

Learning jQuery 3 - Fifth Edition

By: Jonathan Chaffer, Karl Swedberg

Overview of this book

If you are a web developer and want to create web applications that look good, are efficient, have rich user interfaces, and integrate seamlessly with any backend using AJAX, then this book is the ideal match for you. We’ll show you how you can integrate jQuery 3.0 into your web pages, avoid complex JavaScript code, create brilliant animation effects for your web applications, and create a flawless app. We start by configuring and customising the jQuery environment, and getting hands-on with DOM manipulation. Next, we’ll explore event handling advanced animations, creating optimised user interfaces, and building useful third-party plugins. Also, we'll learn how to integrate jQuery with your favourite back-end framework. Moving on, we’ll learn how the ECMAScript 6 features affect your web development process with jQuery. we’ll discover how to use the newly introduced JavaScript promises and the new animation API in jQuery 3.0 in great detail, along with sample code and examples. By the end of the book, you will be able to successfully create a fully featured and efficient single page web application and leverage all the new features of jQuery 3.0 effectively.
Table of Contents (23 chapters)
Title Page
About the Authors
About the Reviewer
Customer Feedback

Event propagation

In illustrating the ability of the click event to operate on normally non-clickable page elements, we have crafted an interface that doesn't indicate that the style switcher label--just an <h3> element-is actually a live part of the page awaiting user interaction. To remedy this, we can give it a rollover state, making it clear that it interacts in some way with the mouse:

.hover { 
  cursor: pointer; 
  background-color: #afa; 

The CSS specification includes a pseudo-class called :hover, which allows a stylesheet to affect an element's appearance when the user's mouse cursor hovers over it. This would certainly solve our problem in this instance, but instead, we will take this opportunity to introduce jQuery's .hover() method, which allows us to use JavaScript to change an element's styling--and indeed, perform any arbitrary action--both when the mouse cursor enters the element and when it leaves the element.

The .hover() method takes two function arguments, unlike...