Intended for use with one or more other radio items. A group of radio buttons presents users with a set of mutually exclusive choices. Each radio button represents one choice the user can make.
There is always one selected radio button in the group. As well, since radio buttons present a mutually exclusive set of choices, only one radio button in a group can be selected. When a user chooses a radio button, that radio button becomes selected.
A selected radio button appears filled in some way. All other radio buttons in the group appear empty.
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This example shows a group of three radio buttons. The first radio button is the initial choice: the value option setting is on. The buttons all belong to the group search_Group.
<radio sid="NAME_RADIO">
<value>on</value>
<group>search_Group</group>
<label>Search by Name</label>
</radio>
<radio sid="NUMBER RADIO">
<group>search_Group</group>
<label>Search by Number</label>
</radio>
<radio sid="OCCUPATION RADIO">
<group>search_Group</group>
<label>Search by Occupation</label>
</radio>
As shown here, only the chosen radio button needs to have a value option setting. The remaining radio buttons will receive the (default) value setting of off.