object has been created, various attributes of the object can be set to handler functions.When an XML document is then fed to the parser, the handler functions are called for the character data and markup in the XML document.a) Construction of DOM tree b) Traversing the DOM tree It does a Depth First Pre Order Traversal , for more on tree traversal techniques see here As it goes through each node it prints it contents.This snippet explains how to handle the element Node parses a XML document and prints it on the console.
This can improve performance substantially since Expat normally breaks character data into chunks at every line ending.
For pugixml the compromise is as follows: any well-formed document often has to be transformed in certain ways by the time it reaches the user.
The transformations include end-of-line handling, attribute-value normalization and character reference expansion.
Once I tell people about these problems with their choice of XML parser, some say they don’t care since nobody uses these features anyway.
It is true that most of these features are seldom used.
The element name passed to the element handlers Returns the input data that generated the current event as a string.