November 2011
Intermediate to advanced
384 pages
13h 23m
English
Content preview from HTML5: Your visual blueprint™ for designing rich web pages and applications
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SPECIFY OBJECTS TO DRAG
To begin supporting HTML5 drag and drop in your website, you must first instruct the web browser which HTML objects are actually draggable. Fortunately, this is very easy with the advent of a new global attribute appropriately named draggable. To activate this, set its attribute value to true:
<element draggable='true'>...</element>
All elements identified as draggable will start firing off dragstart and dragend events. Listening for these will allow your code to launch when the user begins and completes the drag-and-drop process, relative to the element being dragged.
Using jQuery’s selectors and its each() method, registration for this event is very easy to do:
<script type='text/javascript'> $('[draggable=true]').each(function(){ ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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