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Checking if a radio button is selected
- Thread starter gameon
- Start date
- Thread starter
- #3
that pops up with undefined:
alert(document.CalendarFilter.OnDemand.checked);
this says true though (but all the time):
document.CalendarFilter.OnDemand[0].value
this says false though (but all the time):
document.CalendarFilter.OnDemand[1].value
??
alert(document.CalendarFilter.OnDemand.checked);
this says true though (but all the time):
document.CalendarFilter.OnDemand[0].value
this says false though (but all the time):
document.CalendarFilter.OnDemand[1].value
??
- Thread starter
- #4
All radio buttons with the same name form an array that is traversable with a for-loop. Try the following:
Good luck!
--Dave
Code:
<HTML>
<HEAD>
<SCRIPT>
function showVal()
{
for(i=0; i<RB.length; i++)
if(RB[i].checked)
alert(RB[i].value);
}//end showVal()
</SCRIPT>
</HEAD>
<BODY>
<INPUT TYPE=RADIO VALUE=1 NAME=RB> 1<BR>
<INPUT TYPE=RADIO VALUE=2 NAME=RB> 2<BR>
<INPUT TYPE=RADIO VALUE=3 NAME=RB> 3<BR>
<INPUT TYPE=BUTTON VALUE='SHOW VAL' ONCLICK=showVal()>
</BODY>
</HTML>Good luck!
--Dave
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