Web hosting service - 214 Part III .Document Objects Reference Example (with
214 Part III .Document Objects Reference Example (with Listing 15-45) on the CD-ROM Related Items: onCopy, onCut, onBeforePaste event handlers. onPropertyChange NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility The onPropertyChange event fires in Windows versions of IE5+ whenever a script modifies an object s property. This includes changes to the properties of an object s style. Changing properties by way of the setAttribute()method also triggers this event. A script can inspect the nature of the property change because the event.propertyName property contains the name (as a string) of the property that was just changed. In the case of a change to an object s style object, the event. propertyName value begins with style. as in style.backgroundcolor. You can use this event handler to localize any object-specific post-processing of changes to an object s properties. Rather than include the post-processing statements inside the function that makes the changes, you can make that function generalized (perhaps to modify properties of multiple objects). Example (with Listing 15-46) on the CD-ROM Related Items: style property; setAttribute() method. onReadyStateChange NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility The onReadyStateChange event handler fires whenever the ready state of an object changes. See details about these states in the discussion of the readyState property earlier in this chapter (and notice the limits for IE4). The change of state does not guarantee that an object is, in fact, ready for script statements to access its properties. Always check the readyStateproperty of the object in any script that the onReadyStateChange event handler invokes. This event fires for objects that are capable of loading data: APPLET, document, FRAME, FRAMESET, IFRAME, IMG, LINK, OBJECT, SCRIPT, and XML objects. The event doesn t fire for other types of objects unless a Microsoft DHTML behavior is associated with the object. The onReadyStateChange event does not bubble, nor can you cancel it. On the CD-ROM On the CD-ROM elementObject.onReadyStateChange
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