What are the levels involved in DOM?

What are the levels involved in DOM?

- DOM is used to define the object with its properties that is having all the document elements and the methods allowing access to them.

- DOM is known as document object model is divided into three different parts or levels:

- Core DOM is used for the standard model for all the structures and the structured documents.

- XML DOM is used as a standard model for the XML documents that can be different according to the different requirements.

- HTML DOM is used to have a standard model used for the HTML documents having the properties and functions.