How to check radio button is checked/selected or not by Javascript only?

You can validate the radio button in a form is selected or not with the help of javascript.

<div class="radio-buttons">
      <div class="male">
        <input class="form-radio" type="radio" name="gender" id="radio1" value="male">
        <label class="form-check-label" for="radio1">Male</label>
      </div>

      <div class="female">
        <input class="form-radio" type="radio" name="gender" id="radio2" value="female">
        <label class="form-check-label" for="radio2">Female</label>
      </div>
</div>

Here you can check it by document.querySelectorAll() with the help of attribute name,