Du kan lave et html doc med følgende kode og se ;)
<html>
<head>
<script type='text/javascript'>
function validerRadio( radioArray ) {
for (var i=0; i<radioArray.length; i++ ) {
if ( radioArray[i].checked ) return true; //der er valgt een
}
return false; // der er ikke valgt nogene
}; //end validerRadio( radioknap array objekt ) -> boolean
function validerTest1Test2Test3( formElem ) {
if ( validerRadio( formElem.test3 ) ) return true; // alles gut
// nix. begge de to andre skal være valgt
if ( ! validerRadio( formElem.test1 ) ) return false; // sorry
if ( ! validerRadio( formElem.test2 ) ) return false; // sorry
return true; // både test1 og test2 bestod testen
}; //end validerTest1Teat2Test3( Form objekt ) -> boolean
function uncheckAll(){
document.survey.test1[0].checked=false;
document.survey.test1[1].checked=false;
document.survey.test1[2].checked=false;
document.survey.test1[3].checked=false;
document.survey.test2[0].checked=false;
document.survey.test2[1].checked=false;
document.survey.test2[2].checked=false;
document.survey.test2[3].checked=false;
}
function uncheck(){
document.survey.test3.checked=false;
}
</script>
</head>
<body>
<form action="aef.htm" method="post" name="survey" id="survey" onsubmit="return validerTest1Test2Test3( this );">
<p> TEST1
<input type="radio" name="test1" value="1" onClick="uncheck()">
<input type="radio" name="test1" value="2" onClick="uncheck()">
<input type="radio" name="test1" value="3" onClick="uncheck()">
<input type="radio" name="test1" value="4" onClick="uncheck()">
</p>
<p> TEST2
<input type="radio" name="test2" value="1" onClick="uncheck()">
<input type="radio" name="test2" value="2" onClick="uncheck()">
<input type="radio" name="test2" value="3" onClick="uncheck()">
<input type="radio" name="test2" value="4" onClick="uncheck()">
</p>
<p>TEST3
<input type="radio" name="test3" value="5" onClick="uncheckAll()">
</p>
<p>
<input type="submit" name="Submit" value="Submit">
</p>
</form>
</body>
</html>
