in this we are talking about width and height so first of all we have to know that how to get width and height so ther are 4 methods to get them 1 -> innerheigth 2 -> innerwidth 3 -> outerheight 4 -> ...

what is dom tree and how is like that this is dom treeis a main work of html its work from document and main from html and then after this there are two more point ...