205Chapter 15 .Generic HTML Element Objects Example on
Monday, October 22nd, 2007205Chapter 15 .Generic HTML Element Objects Example on the CD-ROM Related Items: event.dataTransfer object; onDrag, onDragEnd, onDragEnter, onDragLeave, onDragOver, onDragStart event handlers. onFilterChange NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility The onFilterChange event (not implemented in IE5/Mac) fires whenever an object s visual filter switches to a new state or a transition completes (a transition may be extended over time). Only objects that accommodate filters and transitions in IE (primarily block elements and form controls) receive the event. A common usage of the onFilterChange event is to trigger the next transition within a sequence of transition activities. This may include an infinite loop transition, for which the object receiving the event toggles between two transition states. If you don t want to get into a loop of that kind, place the different sets of content into their own positionable elements and use the onFilterChange event handler in one to trigger the transition in the other. Example (with Listing 15-39) on the CD-ROM Related Item: filter object. onFocus NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility The onFocus event fires when an element receives focus, usually following some other object losing focus. (The element losing focus receives the onBlurevent before the current object receives the onFocusevent.) For example, a text input element fires the onFocus event when a user tabs to that element while navigating through a form via the keyboard. Clicking an element also gives that element focus, as does making the browser the frontmost application on the client desktop. The availability of the onFocus event has expanded with succeeding generations of script-capable browsers. In earlier versions, blur and focus were largely confined to text-oriented input elements (including the SELECT element). The window object received the onFocusevent handler starting with NN3 and IE4. IE4 also extended On the CD-ROM On the CD-ROM elementObject.onFocus
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