XML by Example

After it has collected the exchange rates, the application loads the price list

and converts the prices. To do this, it needs to retain state information as it

walks down the tree. Again, this is not new and it has been covered in the

previous section.

CAUTION

This application does little error checking. Specifically it does not check whether the

currency really exists. Also the currency code must be written in lowercase.

NamedNodeMap

Manipulating the attributes is done in the walkRate() function. Element

objects have an attributes property. The attributes property is a

NamedNodeMap object.

A NamedNodeMap is a list of nodes with a name attached to them. ...