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YUI Library Examples: Drag & Drop: Custom Click Validator

Drag & Drop: Custom Click Validator

This example demonstrates how to implement a custom click validator to make a circular drag and drop implementation. Because all DOM elements that have dimensions are rectangular, the way to implement a circular drag object is to perform calculations on mousedown to determine whether the mouse was targeting a valid portion of the element (eg, a portion within the circle).

The same method could be used to create any non-rectangular draggable object.


Basic Drag and Drop

The Drag & Drop Utility lets you make HTML elements draggable.

For this example, we will enable drag and drop for the three <div> elements.



Configuration for This Example

You can load the necessary JavaScript and CSS for this example from Yahoo's servers. Click here to load the YUI Dependency Configurator with all of this example's dependencies preconfigured.

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