Traversal methods
- getElementsByTagName
- Returns a NodeList of all the Elements with a given tag name in the
order encountered in a traversal of the document tree
- [i]
- Returns the ith item in the NodeList starting at 0
- getElementById
- Returns the Element whose name is given by the Id
- childNodes
- Returns a NodeList of all the children of the specified node
- firstChild, lastChild, previousSibling, nextSibling
- Returns the requested node
