如何要求以 html5 形式选择单选按钮

html 5 form contains two radio buttons. How to force user to select one radion button before submitting form ? I tried to use required but there is not radio button group, required shoult applited to group.

<form action="/Home/Sendtitle" method="post">
<p>
  Title*  <span>
    <span>
      <span>
        <input name="staatus" type="radio" value="Mister" autofocus>&nbsp;
        <span>Mister</span>
      </span>
      <span>
        <input name="staatus" type="radio" value="Missis">&nbsp;
        <span>Missis</span>
      </span>
    </span>
  </span>
</p>

<p>
  <input type="submit" value="Send title" >
</p>

</form>

解决方案

You can use the property required as its a boolean attribute that solve ur problem. required="required"