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Handling Events

This chapter describes the events that occur when the user interacts with a webpage on iPhone. In general, gestures emulate mouse events and don’t generate any new types of events. Forms and documents generate the typical events you might expect. However, changing the orientation of the device generates the only iPhone-specific event. Also, be aware that there are some unsupported events such as cut, copy, and paste.

Gestures that the user makes—for example, double tap to zoom and flick to pan—emulate mouse events. However, the flow of events generated by one-finger and two-finger gestures are conditional depending on whether or not the selected element is clickable or scrollable as described in “One-Finger Events” and “Two-Finger Events.”

A clickable element is a link, form element, image map area, or any other element with mousemove, mousedown, mouseup, or onclick handlers. A scrollable element is any element with appropriate overflow style, text areas, and scrollable iframe elements. Because of these differences, you might need to change some of your elements to clickable elements, as described in “Making Elements Clickable,” to get the desired behavior on iPhone.

If you want to change the layout of your webpage depending on the orientation of iPhone, read “Handling Orientation Events.”

See “Supported Events” for a complete list of events supported on iPhone.

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