Many times we use index.htm document as it is standard for host-server to look and deploy document. It is the default document which is displayed on the web.
In HTML, HEAD is placed before body and it is used to show general information or unordered collection about HTML document. In HTML, it is the first tag which helps to give title for the page.
Component is an object like a scroll bar or button that is visually presented on screen window whereas a container is window-like component which has different components.
Each component has unique container that contains it directly.
The member function of a class which is used for creating objects of that particular class is known as a constructor. It has the same name of a class without any return type. New operator is used to invoke it.
An ordinary member function of a class is known as a method. It has a return type with its own name. Dot operator is used to invoke it.