Flash / Flex / ActionScript/XML/Comments and Processing Instructions — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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(нет различий)
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Текущая версия на 08:14, 26 мая 2010
Содержание
- 1 Accessing Comments and Processing Instructions
- 2 Converting Comments and Processing-Instructions to Strings
- 3 Finding Node Types: element, attribute, text, comment, processing-instruction
- 4 Search for elements only while ignoring text nodes, comments, and processing directives, use elements()
- 5 Setting Options for the XML Class
- 6 To obtain an XMLList representing all comments and processing instructions within an entire XML tree
- 7 use the comments() method or the processingInstructions() method to get XMLLists
Accessing Comments and Processing Instructions
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var novel:XML = <BOOK ISBN="0000000000">
<!--Hello world-->
<?application someData?>
<TITLE>ActionScript</TITLE>
<AUTHOR>J, J</AUTHOR>
<?app2 someData?>
<PUBLISHER>Books Ltd</PUBLISHER>
<!--The End-->
</BOOK>
novel.ignoreComments = false;
novel.ignoreProcessingInstructions = false;
trace(novel.ruments( )[0]); // <!--Hello world-->
trace(novel.ruments( )[1]); // <!--Goodbye world-->
trace(novel.processingInstructions( )[0]); // <?app1 someData?>
trace(novel.processingInstructions( )[1]); // <?app2 someData?>
}
}
}
Converting Comments and Processing-Instructions to Strings
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
XML.ignoreComments = false;
XML.ignoreProcessingInstructions = false;
var novel:XML = <BOOK ISBN="0141182806">
<!--This is a comment-->
<?someTargetApp someData?>
<TITLE>Actionscript</TITLE>
<AUTHOR>J, K</AUTHOR>
<PUBLISHER>Penguin Books Ltd</PUBLISHER>
</BOOK>;
trace(novel.ruments()[0].toString( ));
trace(novel.processingInstructions()[0].toString( ));
}
}
}
Finding Node Types: element, attribute, text, comment, processing-instruction
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
XML.ignoreComments = false;
XML.ignoreProcessingInstructions = false;
var example:XML = <html>
<head />
<body id="main">
Welcome!
<!-- Start PHP -->
<?php
// execute some php code
?>
<!-- End PHP -->
</body>
</html>;
trace(example.body.nodeKind()); // Displays: element
trace(example.body.@id.nodeKind()); // Displays: attribute
trace(example.body.text().nodeKind()); // Displays: text
trace(example.body.ruments()[0].nodeKind()); // Displays: comment
trace(example.body.processingInstructions().nodeKind()); // Displays:
}
}
}
Search for elements only while ignoring text nodes, comments, and processing directives, use elements()
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var movieList:XML = <movieList>
<listName>My favorite movies</listName>
<movie id="123">
<title>Titus</title>
<year>1999</year>
<director>J T</director>
</movie>
<movie id="456">
<title>Rushmore</title>
<year>1998</year>
<director>W A</director>
</movie>
<movie id="789">
<title>Hall</title>
<year>1977</year>
<director>Woody Allen</director>
</movie>
</movieList>;
trace(movieList.elements("year"));
}
}
}
Setting Options for the XML Class
//ignoreWhitespace
//ignoreComments
//ignoreProcessingInstructions
//prettyPrinting
//prettyIndent
//ignoreWhitespace
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
trace(XML.settings().ignoreProcessingInstructions); // Displays: true
XML.ignoreProcessingInstructions = false;
trace(XML.settings().ignoreProcessingInstructions); // Displays: false
}
}
}
To obtain an XMLList representing all comments and processing instructions within an entire XML tree
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var novel:XML = <BOOK ISBN="0000000000" INSTOCK="false">
<TITLE>ActionScript</TITLE>
<AUTHOR>J, J</AUTHOR>
<PUBLISHER>Books Ltd</PUBLISHER>
</BOOK>;
var tempRoot:XML = <tempRoot/>;
tempRoot.appendChild(novel);
trace(tempRoot..*.ruments( )[0]); // First comment in the document
}
}
}
use the comments() method or the processingInstructions() method to get XMLLists
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
XML.ignoreComments = false;
XML.ignoreProcessingInstructions = false;
var example:XML = <html>
<head />
<body id="main">
Welcome!
<!-- Start PHP -->
<?php
// execute some php code
?>
<!-- End PHP -->
</body>
</html>;
trace(example.*.ruments().length()); // Displays: 2
trace(example.body.ruments().toXMLString());
trace(example.body.ruments()[1].toXMLString());
trace(example.*.processingInstructions().toXMLString());
}
}
}