Yaromat Check Form - Value in at least one of multiplecheck boxes

[Chris Dart]

I need to force that at least one or more of multiple Check boxes be selected.
Radio boxes can be set to any one selected and Yaromat Check Form can control
that, but it does not seem to control that at least one or more of a set of
Check Boxes are set. The checkboxes take this form:
<input name="number" type="checkbox" id="number" value="1">
<input name="number" type="checkbox" id="number" value="2">
etc

Any Ideas please?

Chris Dart

[kdpowell]

This answer assumes you already have the Javascript on the page for validation with Yaromat.
Find these two lines:

if (addErr){myErr+='* '+args[i+3]+'\n'; addErr=false}
}

BELOW IT add this:
/* has to have at least one checkbox selected */
/* NOTE: in this example each checkbox in my checkbox group is named STUDENT_NUMBER */
var x = document.getElementsByName("STUDENT_NUMBER");
var okay=false;
for (i = 0; i < x.length; i++)
{
var fld = x[i];
if (fld.checked == true)
{
okay=true;
break;
} else {
addErr=true
}
}
/* add the error message for your checkboxes here. Of course, yours will be different. */
if (!okay){myErr+='* Please select a STUDENT\n'; okay=false}

/* The next lines are the very end of the function YY_checkform() function and should remain the same. Your checkbox code (above) must be added BEFORE this ending of the function */

if (myErr!=''){alert('The required information is incomplete or contains errors:\t\t\t\t\t\n\n'+myErr)}
document.MM_returnValue = (myErr=='');
}
*/ this marks the end of the function YY_checkform() */

I need to force that at least one or more of multiple Check boxes be selected.
Radio boxes can be set to any one selected and Yaromat Check Form can control
that, but it does not seem to control that at least one or more of a set of
Check Boxes are set. The checkboxes take this form:
<input name="number" type="checkbox" id="number" value="1">
<input name="number" type="checkbox" id="number" value="2">
etc

Any Ideas please?

Chris Dart