The desired behavior we want is to have only one button selected at a time; when one button is selected then any previously selected button will be automatically deselected.The solution here is to give all of the radio buttons within the group the same name but different values.roughly my html looks like: Thank you for your interest in this question.Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).where the first argument is either a collection of radio buttons, or the name of the button group.The second argument is a reference to the containing form, though its only necessary if a string is used for the first argument.Here is the code used for the radio button themselves.
It can prevent people from leaving fields blank, from entering too little or too much or from using invalid characters.
This example took about 15 minutes to build and tweak to her specifications.
The techniques used here are very rudimentary, but effective nonetheless.
If you have suggestions for other approaches, or additional questions related to this example, be sure to email me. For more information, you'll want to keep a good Java Script reference manual handy.
The setup and validation of radio buttons appears to be the form field that gives many webmasters the most difficulty in setting up.