JAVASCRIPT

document get element by id radio button

var selectedOption = $("input:radio[name=option]:checked").val()

radio button getelementsbyname

var radioButtons = document.getElementsByName("Vehicle");for (var i = 0; i < radioButtons.length; i++) {    if (radioButtons[i].checked) {        console.log("radioButton " + i + ": " + radioButtons[i].value);    }}