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sejal joshi
Greenhorn

Joined: Dec 19, 2000
Posts: 5
hello everybody
on my servlet which generates a html page there r three radio buttons & one submit button
when i click on submit i want to detect which radio button is selected.& calculate
the no of times it is selected.if i am not selecting any option
message should come.pls reply soon.
Sejal

Archu
ali farid
Ranch Hand

Joined: Aug 26, 2000
Posts: 60
Hi, i cant understand what do meant by "calculate the no of times it is selected "
will you please explain a little more.
Sean MacLean
author
Ranch Hand

Joined: Nov 07, 2000
Posts: 621
I guessing you mean that you want to have a set of radio buttons and have the value (the number) of the selected radio passed when the form is submitted. If so, here's how to do it.
<FORM METHOD=POST ACTION="http://Some url">
<INPUT TYPE="radio" NAME="myRadios" VALUE="1"> radio1<BR>
<INPUT TYPE="radio" NAME="myRadios" VALUE="2"> radio2<BR>
<INPUT TYPE="radio" NAME="myRadios" VALUE="3"> radio3<BR>
<INPUT TYPE="submit">
</FORM>
Now, because the radio buttons have the same name they will act like radio buttons and not checkboxes (i.e. you will only be able to select one). When one is selected and the form is posted then the name "myRadios" will have the value of the selected radio button (1, 2, or 3 in this case). So if you ask for the value of "myRadios" you will get the value of the one selected. You can set one of them as a default by doing this.
<INPUT TYPE="radio" NAME="myRadios" VALUE="1" CHECKED> radio1<BR>
I hope this helps.
Sean
 
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subject: checkbox