Widget in blog

what is widget in blog, 

In computer programming, a widget (or control) is an element of a graphical user interface (GUI) that displays an information arrangement changeable by the user, such as a window or a text box. The defining characteristic of a widget is to provide a single interaction point for the direct manipulation of a given kind of data. In other words, widgets are basic visual building blocks which, combined in an application, hold all the data processed by the application and the available interactions on this data.

A widget may have the following attributes:

• id - (Required) May contain letters and numbers only, and each widget ID in your template should be unique. A widget's ID cannot be changed without deleting the widget and creating a new one.
• type - (Required) Indicates what kind of a widget it is, and should be one of the valid widget types listed below.
• locked - (Optional) Can be 'yes' or 'no,' with 'no' as the default. A locked widget cannot be moved or deleted from the Page Elements tab.
• title - (Optional) A display title for the widget. If none is specified, a default title such as 'List1' will be used.
• pageType - (Optional) Can be 'all,' 'archive,' 'main,' or 'item,' with 'all' as the default. The widget will display only on the designated pages of your blog. (All widgets display on the Page Elements tab, regardless of thier pageType.)
• mobile - (Optional) Can be 'yes', 'no,' or ‘only’ with 'default' as the default. This decides if the widget will be displayed on mobile or not. Only Header, Blog, Profile, PageList, AdSense, Attribution will be displayed on mobile when the mobile attribute is 'default.'

The types of widgets you can specify are:

• BlogArchive
• Blog
• Feed
• Header
• HTML
• SingleImage
• LinkList
• List
• Logo
• BlogProfile
• Navbar
• VideoBar
• NewsBar