JavaScript: checking for at least item on survey completed

​​​​function checkOne(frm){

  var oneFilled = false;

  for(var i = 0;i < frm.elements.length;i++){

    switch(frm.elements[i].type){

      case "text": oneFilled = frm.elements[i].value.length > 0;break;

      case "radio":;

      case "checkbox":oneFilled = frm.elements[i].checked;break;

      case "textArea":oneFilled = frm.elements[i].value.length > 0;break;

      case "select":oneFilled = frm.elements[i].selectedIndex > -1;break;

    }

    if(oneFilled) break;

  }

  return oneFilled;

}