XML by Example

such as text or entities. As you will see, more complex applications have to

examine all the nodes.

At each step, the function tests whether the current node is a price. For

each price element, it computes the price in Euros and prints it.

Next, the function turns to the node’s children. It loops through all the chil-

dren and recursively calls itself for each child.

To walk through the node’s children, the function accesses the

childNodes

property. childNodes contains a NodeList. NodeList is a DOM object that

contains a list of Node objects. It has two properties:

• length, the number of nodes in the list.

• item(i), a method to access node i in the ...