567Chapter 18The Document and Body Objectsdocument.onmouseup = showSelection;

Getting Selected Text

Select some text and see how JavaScript can capture the selection:

ARTICLE I

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Related Items:document.selectionproperty. handleEvent(event) Returns:Nothing. Compatibility:WinIE-, MacIE-, NN4, Moz-, Safari- When you explicitly capture NN4 events in the window, document, or layer object (by invok- ing the captureEvents()method for that object), you can control where the events go aftertheir initial capture. To let an event continue to its original target (for example, a button thatis clicked by a user), you use the routeEvent()method. But if you want to redirect an event(or class of events) to a particular event handler elsewhere in the document, use thehandleEvent()method. See the discussion of the handleEvent()method for the windowobject in Chapter 16. Thebehavior of the handleEvent()method for all objects is the same. Related Items:document.captureEvents(), document.releaseEvents(), document.routeEvent()methods; eventobject (Chapter 25). open([ mimeType ] [, replace ]) Returns:Nothing. Compatibility:WinIE3+, MacIE3+, NN2+, Moz1+, Safari1+ Opening a document is different from opening a window. In the case of a window, you re cre- ating a new object, both on the screen and in the browser s memory. Opening a document, onthe other hand, tells the browser to get ready to accept some data for display in the windownamed or implied in the reference to the document.open()method. (For example, parent.frames[1].document.open()may refer to a different frame in a frameset, whereasdocument.open()implies the current window or frame.) Therefore, the method name maymislead newcomers because the document.open()method has nothing to do with loadingdocuments from the Web server or hard disk. Rather, this method is a prelude to sendingdata to a window via the document.write()or document.writeln()methods. In a sense, document.open()
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