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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HANDLE THE DRAG-AND-DROP EVENTS
After you have the draggable and drop zone elements established and functions registered for the drag-and-drop events, you are ready to provide the JavaScript code to handle the events’ transactions. There are three stages in the drag-and-drop workflow described in this section, and all three are required to fully support drag and drop in your website.
Stage one of three, handling the drag-start event, consists of three parts: First, store the source drag element into a global variable; second, specify which type of drop effects are allowed; third, store any data that will be passed from this draggable object into the drop zone element:
var srcDragElement; function onDragStart(event) { srcDragElement = this; ...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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