Prototype - Form.Element Management

Form.emement is a submodule of Form which deals with specific form controls on INPUT, SELECT and TEXTAREA elements.

Form.Element is also aliased Field. Following two forms are equivalent −

Form.Element.activate('myfield')

is equivalent to:

Field.activate('myfield');

Which in turn equivalent to:

$('myfield').activate()

Here is a complete list of all the methods related to Form.Element.

Prototype Event Methods

NOTE − Make sure you at least have the version 1.6 of prototype.js.

S.No.	Method & Description
1.	activate() Gives focus to a form control and selects its contents if it is a text input.
2.	clear() Clears the contents of a text input.
3.	disable() Disables a form control, effectively preventing its value to be changed until it is enabled again.
4.	enable() Enables a previously disabled form control.
5.	focus() Gives keyboard focus to an element.
6.	getValue() Returns the current value of a form control. A string is returned for most controls; only multiple select boxes return an array of values. The global shortcut for this method is $F().
7.	present() Returns true if a text input has contents, false otherwise.
8.	select() Selects the current text in a text input.
9.	serialize() Creates an URL-encoded string representation of a form control in the name=value format.

prototype_form_management.htm