How radio buttons values can be accessed in the form processing
scripts?
Radio buttons and check boxes are a lot little. Both radio buttons and check boxes
are used to group options that user can choose form. Consider an example that
you create a form, which lists three product lines and asked users to select which
one they were interested in and you wanted to let the users select one, two, or
three product lines that they were interested in, you use check boxes to facilitate
our information gathering. Perhaps you want to ask users what is their most favorite
product line, Check boxes wouldn’t work in this situation, but radio buttons
would. Note
that the syntax <INPUT> tag is used when creating a radio button. It looks
a lot like the syntax when you created a check box. The only change is the value
of the TYPE property from TYPE = CHECKBOX to TYPE = RADIO. Again, with radio buttons,
as with check boxes, related radio buttons have their NAME properties equal but
different values for their VALUE properties. You
can also use the CHECKED keyword to have a radio button selected by default. Again,
its syntax is identical to the syntax for having a check box selected by default.
The following line would create a radio button that is checked by default: <INPUT
TYPE = RADIO NAME = Product Line VALUE = Stereos CHECKED> The
radio buttons ensures that the user selects none or one of the related options.
However, if you use the CHECKED keyword to have a radio button selected by default,
you restrict the user to having to choose an option. Without a radio button selected
by default , the user can simply not choose a radio button option. If
however, one of the radio buttons is selected by default, there is no way the
user can unselect the option. So, if you use radio buttons for options that must
have a response, such as gender, then it is wise to have one of the radio buttons
selected by default. That way, the user cannot submit the form without having
selected one of the radio button options. Choosing
your checkboxes and Radio Buttons Checkboxes
and radio buttons are used as a means to select one or many options from a set
of related options. It is important, then, that you carefully choose how to label
each option, so that each option, in the set of related options, is unique. When
using checkboxes and radio buttons, you want to present your user with a series
of unique options. ·
The south What
would the user who had visited both the south and the east coast check? Would
they check just the southeast checkboxes? Would they check the east coast and
south checkboxes? Or would they check all three? This is why it is important when
creating both checkboxes and radio buttons to choose options that are distinct
from one another.
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