Dom operation

What is DoM?

Dom (document object model) is a programming interface that allows javascript to interact with html and xml file.

It represents the document as a tree of objects where each node represents to an element in the document.

Javascript can access modify and manipulate the content amd structure of a web page using DOM.

DOM method and properties allows you to manipulate elements, attributes and styles add or remove 

elements and handel events.

Methods: 

In javascript methods are function associated with objects.

Node: its an individual part of elements in the dom tree

              DOM Properties:

Thu

1)document: 

2) child

3) children

4) firstElementChild

5) lastElementChild

6) childElementCount

7) childNodes

              Type of selector:

1) Single:

a) getElementById

b) querySelector

2) Multiple:

a) getElementsByTagName

b) getElementsByClassName

C) getElementsByName

d) querySelectorAll