Drag and Drop
Adding a “physical” aspect to your websites that allows users to move elements around the screen is a nice option. This “drag and drop” behavior is especially useful on devices with touch interfaces.
The Drag and Drop API is probably the oldest feature I cover in this book. It was first implemented in Internet Explorer 5 back in 1999 (that’s about 150 Internet years ago) and has been adopted by other browsers for quite some time, although the effort to standardize it was only undertaken as part of the HTML5 movement. Unfortunately, Drag and Drop shows some signs of aging, being quite arcane and unintuitive at first.
By default the a and img elements can be dragged around the screen (I’ll get to other elements momentarily), but you ...
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