Javascript Checkbox Validation Require

[jamyers79]

I currently have 6 options in which a user MUST select 3 choices... no more... no less... I currently have a script in place that doesn't allow you to check more than 3 however you can not check anything and it goes through which is NOT what needs to happen.

Here is my current JS:

Code: Select all


<Script Language=JavaScript>

var currCount = 0;
var maxCount = 3;

function CountChecks(isBox){

  if (isBox.checked){currCount++}
  else {currCount--}
  if (currCount > maxCount)
   {
    alert('You may only select ' + maxCount + ' magazines for this package.');
    currCount--;
    isBox.checked = false;
   }
 
}



</Script>



How may I add that there must be 3 checked or else it won't go on???

[lalalogic]

Code: Select all

<script Language="JavaScript">
<!--
function checkbox_checker()
{

// set var checkbox_choices to zero

var checkbox_choices = 0;

// Loop from zero to the one minus the number of checkbox button selections
for (counter = 0; counter < checkbox_form.checkbox.length; counter++)
{

// If a checkbox has been selected it will return true
// (If not it will return false)
if (checkbox_form.checkbox[counter].checked)
{ checkbox_choices = checkbox_choices + 1; }

}


if (checkbox_choices > 3 )
{
// If there were more than three selections made display an alert box
msg="You're limited to only three selections.\n"
msg=msg + "You have made " + checkbox_choices + " selections.\n"
msg=msg + "Please remove " + (checkbox_choices-3) + " selection(s)."
alert(msg)
return (false);
}


if (checkbox_choices < 3 )
{
// If there were less then selections made display an alert box
alert("Please make three selections. \n" + checkbox_choices + " entered so far.")
return (false);
}

// If three were selected then display an alert box stating input was OK
alert(" *** Valid input of three outfielders was entered. ***");
return (true);
}

-->
</script>


this might help you :) found here after a google search.