как прочитать значение value в input ( JQuery NO )

function check() { 
  var selected = document.querySelector(".inputs input[name='q1']:checked"); 
  var value = selected ? selected.value : "NONE"; 
  var status = document.getElementById("status"); 
  console.log(value); 
  if (value == "a") 
    status.textContent = "Right answer"; 
  else if (value == "b") 
    status.textContent = "Wrong answer"; 
  else 
    status.textContent = "Answer is not selected"; 
}

<form class="inputs"> 
  <div id="inp1"> 
    <label><input type="radio" value="a" name="q1"/> Pregunta1</label> 
  </div> 
  <div id="inp2"> 
    <label><input type="radio" value="b" name="q1"/> Pregunta2</label> 
  </div> 
  <div id="inp3"> 
    <label><input type="radio" value="b" name="q1"/> Pregunta3</label> 
  </div> 
  <div id="inp4"> 
    <label><input type="radio" value="b" name="q1"/> Pregunta4</label> 
  </div> 
</form> 
<br/> 
<button id="buttonCheck" onclick="check()">CHECK</button> 
<div id="status">...</div>