<script>
function test() {
var obje = new Object();
var inp = document.getElementsByClassName('x').length;
for (var i = 0; i < inp; i++) {
var Vl = document.getElementsByClassName('x')[i].dataset.val;
var Nm = document.getElementsByClassName('x')[i].checked;
switch (Nm) {
case true:
Nm = 1;
break;
case false:
Nm = 0;
break;
}
obje[Vl] = Nm;
}
console.log(obje) //{bir: 1, iki: 0, uc: 0, dort: 1, bes: 1}
}
</script>