The checkbox ( checkbox , , box ) box is a GUI widget that lets users make binary choices, which is a choice between either two possible mutually exclusive options. For example, a user might have to answer 'yes' (unchecked) or 'no' (unchecked) on yes/no questions.
The checkbox is displayed as? or ?, respectively. Description that explains the meaning of the checkbox is usually displayed next to the checkbox. Reversing the checkbox is done by clicking a mouse on a box, or description, or by using a keyboard shortcut, such as a space bar.
Often, a series of checkboxes are presented, each with a binary option between two options. Then the user can choose several options. Compare this with radio buttons, where only one option can be selected from several mutually exclusive options.
Video Checkbox
Tri-state checkbox
Some apps use checkboxes that allow indeterminate conditions in addition to the two provided by the normal checkboxes. This third state is indicated as a box or dash in the checkbox, indicating that the status is unchecked or unchecked. This is most often used when the checkboxes are related to the collection of items in a mixed state. Uncertain circumstances usually can not be selected by the user, and switch to a checked state when enabled.
For example, the checkboxes presented to select files to be sent via FTP might use a tree view so that files can be selected one at a time, or by folder. If only a few files are in the selected folder, then the checkboxes for that folder will not be specified. Clicking on this uncertain checkbox will select all or, less often, none of the files. Keep clicking on the checkbox will alternate between checked (all sub-directories and files selected) and unchecked (no sub-directories or files selected).
Some tri-state checkbox implementations allow users to switch between all countries, including indeterminate circumstances, keeping in mind the state of the mixed items in the collection. This works as an undo feature.
Maps Checkbox
No actionable
Set or clear the checkbox to change the condition of the checkbox without any other side effects. Violating these guidelines by associating additional actions with country changes often confuses users, as they are used to configure data in entry controls such as text boxes, radio buttons and checkboxes, then apply action controls like push buttons to initiate actions to process data.
One common exception is to enable or display additional user input elements whose relevance depends on the status of checkboxes.
HTML
In web form, HTML element & lt; input type = "checkbox" & gt; is used to display a checkbox.
Unicode
- U 2610 Ã,? Ã, BALLOT BOX (9744 decimal Ã, Ã, Â · HTMLÃ,
& amp; # 9744;) - U 2611 Ã,? Ã, BOXAGE BOX WITH CHECK (9745 decimal Ã, Â · HTMLÃ,
& amp; # 9745;) - U 2612 Ã,? Ã, BOTOT BOX WITH X (9746 decimal Ã, Â · HTMLÃ,
& amp; # 9746;)
See also
- Culture checkbox
References
External links
- Media related to Checkbox in Wikimedia Commons
Source of the article : Wikipedia
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