Core Web Programming, Second Edition

18.5. Check Boxes and Radio Buttons

Check boxes and radio buttons are useful controls for allowing the user to select among a set of predefined choices. While each individual check box can be selected or deselected individually, radio buttons can be grouped so that only a single member of the group can be selected at a time.

Check Boxes

HTML Element:	<INPUT TYPE="CHECKBOX" NAME="..." ...> (No End Tag)
Attributes:	NAME (required), VALUE, CHECKED, DISABLED, READONLY, ONCLICK, ONFOCUS, ONBLUR

This input element creates a check box whose name/value pair is transmitted only if the check box is checked when the form is submitted. For instance, the following code results in the check box shown in Figure 18-14.

Figure 18-14. An HTML check box.

 <P> <INPUT ...