Validating radio button javascript

The simplest way to do this is to provide a description as text immediately following the button.To associate the text with its corresponding radio button so that clicking on the text will select that button, we need to make a further addition to the code for each button by surrounding the entire button and its associated text within a label. There browsers, however, are often not smart enough to recognize the nesting, so it is worth putting them in to maximize the number of browsers in which the code will function.A reference to the whole form was passed as a parameter into the function, which uses the "form" argument to refer to the complete form.

validating radio button javascript-60

Check the method used in the above code By simply putting the JS code to perform the validation will do the validation.

There is a on Submit event that will be invoked when you press a submit button, call the validating code (keep that as a function) so that it will be invoked just before passing the data from the client to the server.

In addition to the Javascript solutions above, you can also use an HTML 5 solution by marking the radio buttons as required in the markup.

This will eliminate the need for any Javascript and let the browser do the work for you.

To use the above function, call it from within your form validation routine and pass it the radio button group name.

It will return the value of the button within the group that is selected, or return a null value if no button in the group is selected.

I do not want to use required field validator as it would give me a lot of error messages.

I want a custom message based on a set of controls and so I need to validate using Javascript.

All you need to do is to provide the second group of radio buttons with a different name to that used for the first group.

The name field determines which group that a particular button belongs to.

However looks for the presence of the value attribute rather than the checked boolean and this code would pass validation, even though no radio input has been selected.

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