One can use System.Object datatype to hold any values.
Typically you will use text controls for user-input data, but you can also use date-pickers, lists and combos, radio controls, check boxes and custom controls to accept user-input in a more controlled manner.
Command Line Interface
A data loader is software that allows for the automated import, export, and storage of Salesforce data in large volumes. A data loader is used to import, export, and delete an unlimited amount of data for your business in a quick and secure manner. A Salesforce data loader is a universal tool used for bulk importing and exporting of data. It provides a user-friendly UI or command line access. A data loader can input, update, and completely delete large amounts of Salesforce records.
There is no such HTML code.You can use JavaScript, however, to store a cookie on the users system. This bit of code can be used to store relatively small amounts of data, but allows for tracking the user and some related user data determined by the programmer from page to page.
to create user defined functions the user defined data is needed nd its useful to the programmer to create its own data.
The primary example of a hardware component that allows user data input is a keyboard.
Typically you will use text controls for user-input data, but you can also use date-pickers, lists and combos, radio controls, check boxes and custom controls to accept user-input in a more controlled manner.
Control Panel
Required Field
A User Interface controls how you enter data and instructions and how information is displayed on the screen.
If you override the User Account Control it allows an application to be run even if the you do not have the required administrative privileges.
The program is a Spreadsheet. eg Microsoft Excel
A prompt
The formula bar.
CompareValidator
An input device puts information into the computer. The information comes from the user, the environment, the airwaves, or physical documents. Below are some examples of input devices:Joystick or flight controller - This allows a user to control characters, vehicles and aircraft in computer games.Keyboard (alpha-numeric) - This allows the user to input numbers and letters into the computer/Keyboard (musical) - This allows the user to play or compose music on a computer.Mouse - This allows the user to move a cursor on the screen, drag things on the screen, and make selections.Scanner (documents) - This allows the user to convert documents and photos into digital image formats.Webcam - This allows the user to stream video of themselves, transmit such data to others, and take still images and save them into digital formats.
A computer's graphical user interface can be controlled with a mouse or trackpad.