What does DOM stand for?
The Document Object Model. This means that we are developing a model in which the document or Web page contains objects (elements, links, etc.) that can be manipulated. So you will be able to delete, add, or change an element (as long as the document is still valid, of course!), change its content or add, delete or change an attribute. You will be able to get a list of all the H1 elements in the document, or all the elements with an attribute CLASS=”foo”.