JavaScript radiobutton validation

1. Not good practise not to select something - the user cannot find a way to deselect all - less surprising if don't know is selected.
2. what are the names for the radios?

count = 0;
for (i=0;i<myRadios.length;i++) {
   for (j=0;j<document.myForm.elements[nameOfRadio[i]].length) {
      if (document.myForm.elements[nameOfRadio[i]].checked) {
         count++;
      }
   }
}
if (count<2) {
   alert('No good')
   return false
}

for (Count=0; Count <4; Count ++)
     {
      if(document.form.radioButton[Count].checked)
          {
          return true;
          }
      else
          {
          alert("Please Select Yes, No, or I don't know!")
          return false;
          }
      }  

Fritz the Blank

Oops, Michel beat me to it!

One addition, though, you can generalize as follows:


function checkRadio(strFieldName)

for (Count=0; Count <4; Count ++)
    {
     if(eval("document.form." + strFieldName+ "[" + Count + "].checked"))
         {
         return true;
         }
     else
         {
         alert("Please Select Yes, No, or I don't know!")
         eval("document.form." + strFieldName + ".focus()")
         return false;
         }
     }  

Fritz: Did you notice that my script looks at all radios in the array given?

Michel

Michel,

So,

You see what happens when you try to answer too quickly?

BTW, thank you for the sample code demonstrating the use of "this" when passing parameters.

Fritz the Blank

"You see what happens when you try to answer too quickly?"

???

I do not understand. I said the script I posted will validate any radio in the form if you put the name in the array...

Michel

Sorry Michel,

That's not what I meant. I posted too quickly without reloading the question to see that you already answered it. I was talking about "you" in  the general sense, as in "one" in this case me.

Fritz the Blank

Ah - sorry I misunderstood ;-)

medva,

Did any of these comments help? If so, please select one as an answer.

Fritz the Blank

medva,

Did any of these comments help? If so, please select one as an answer.

Fritz the Blank

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Michel Plungian on this one.

Fritz the Blank

Thanks, Fritz the Blank, and all.  Sorry for the delay, too many TO DOs and not enough Moderators to do them.
:) Moondancer - EE Moderator