Chapter 11. Drag and Drop

So far in this book, we've covered the complete range of fully released interface widgets, and over the next four chapters, we're going to shift our focus to the core interaction helpers. These are widgets that provide mouse-based interactions for widgets, where we can perform actions, such as selecting, dragging, or resizing widgets on a website. A perfect example is the resizable widget, which we will cover in Chapter 12, The Resizable Component. These interaction components of the library differ from those we've already looked at, in that they are not physical objects or widgets that exist on the page.

These are low-level interaction components, as opposed to the high-level widgets that we looked at in the first part of this book. They help the elements used on your pages to be more engaging and interactive for your visitors, which adds value to your site and can help make your web applications appear more professional. They also help to blur the distinctions...