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A radio button or option button [citation needed] is a graphical control element that allows the user to choose only one of a predefined set of mutually exclusive options. [1] The singular property of a radio button makes it distinct from checkboxes , where the user can select and unselect any number of items.
Setting or clearing ("unclicking") a checkbox changes the checkbox's state with no other side-effects.Violating this guideline by associating additional actions with the change of state frequently confuses users, because they are used to configuring data in entry controls such as text boxes, radio buttons, and checkboxes and then invoking an action control such as a push button to initiate the ...
Text selection is associated with the cut, copy and paste operations and done with a cursor, caret navigation or touch.; Image editing applications can feature specialized graphical tools for the selection and modification of areas and shapes or to interact with colours, such as the magic wand selection tool, the lasso selection tool, the marquee selection (bounding box), or the color picker.
If you increase the number in the input box to 8 the additional text appears. Second, we also exposed the values of calculator cells as CSS variables . This allowed for more complex effects, like dynamically changing colors or position based on a calculator formula.
A text box also called an input box, text field or text entry box, is a control element of a graphical user interface, that should enable the user to input text information to be used by a program. [ 1 ] [ 2 ] Human Interface Guidelines recommend a single-line text box when only one line of input is required, and a multi-line text box only if ...
The radio link may be half-duplex, as in a walkie-talkie, using a single radio channel in which only one radio can transmit at a time, so different users take turns talking, pressing a "push to talk" button on their radio which switches off the receiver and switches on the transmitter.
type="radio" A radio button. If multiple radio buttons are given the same name, the user will only be able to select one of them from this group. type="button" A general-purpose button. The element <button> is preferred if possible (i.e., if the client supports it) as it provides richer possibilities. type="submit" A submit button. type="image"
A cognitive radio (CR) is a radio that can be programmed and configured dynamically to use the best channels in its vicinity to avoid user interference and congestion. Such a radio automatically detects available channels, then accordingly changes its transmission or reception parameters to allow more concurrent wireless communications in a given band at one location.