19.3. Adding Elements to an XML Object
Problem
You want to construct an XML
object
and add elements to it.
Solution
Use the createElement( )
method to
create
the element, and then use the
appendChild( )
or insertBefore(
)
method to add the element to
the XML tree.
Discussion
You might want to add elements to an XML object to construct an XML data structure to pass to another application. There are several ways to accomplish this, as discussed in Recipe 19.2.
You can create XML elements using the createElement(
)
method of any XML
object. You
should specify the element name as a string parameter passed to the
createElement( )
method. The method returns a
reference to the new element (an XMLnode
object).
my_xml = new XML( );
// Create a new element, <myFirstElement />
.
myElement = my_xml.createElement("myFirstElement");
Although the createElement( )
method creates the
new element, it doesn’t insert it into the XML tree
hierarchy. Instead, you have to instruct Flash where to insert the
new element using either the appendChild( )
or
insertBefore( )
method. The
appendChild( )
method adds the element to the
end of the children elements of the XML
object
(or XMLNode
object) from which the method is
called:
// Adds themyElement
element to themy_xml
object. my_xml.appendChild(myElement); trace(my_xml); // Displays: <myFirstElement /> // Create another element,<myFirstNestedElement />
. myNestedElement0 = my_xml.createElement("myFirstNestedElement"); // Add the new element as a child of
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