XML Demystified

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XML Demystifi ed
before that. The API does not have an insertAfter() method so this is another way to
accomplish the same thing. Suppose you were inserting after the last node in the
list. i+1 would not reference a valid node because it’s beyond the boundary of the
list. The second argument would evaluate to null. When the method sees null as the
second argument, it puts the new node last in the list. It’s equivalent to calling
appendNode(). The XML document is then displayed before the function returns to
the statement that called the InsertAfter() function.
If they don’t match, then the function returns without changing the XML
document.
Here’s the XML document after the new CD is inserted:
U2
How to Dismantle an Atomic Bomb
13.98
Interscope Records
2004-11-23
Led Zeppelin
Physical Graffiti
22.99
Atlantic
1994-08-16
Rush
Rush in Rio
13.98
Atlantic
2003-10-21
Phish
Live Phish, Vol. 15
26.99
ELEKTRA/WEA
2002-10-29
Billy Joel