Definition and Usage. The contextmenu attribute specifies a context menu for an element. The context menu appears when a user right-clicks on the element. The value of the contextmenu attribute is the id of the <menu> element to open.
A context menu (also know as a contextual menu, shortcut menu or pop-up menu) is the menu that appears when you right-click and offers a set of choices that are available for, or in context of, whatever it was you clicked. The available choices are usually actions specifically related to the selected object.
The Right Click Menu or the Context Menu is the menu, which appears when you right-click on the desktop or a file or folder in Windows. This menu gives you added functionality by offering you actions you can take with the item. Most programs like to stuff their commands in this menu.
