javascript getElementById radio button code example

Example 1: javascript how to select radio button

function check() {
  document.getElementById("red").checked = true;
}

Example 2: 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);    }}