Answers for "radio button value"

get radio button value javascript

document.querySelector('input[name="rate"]:checked').value;

html radio button checked

<input type="radio" id="huey" name="drone" value="huey"
         checked> 
<!-- https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/radio-->

radio selected

//checked
  <input type="radio" id="huey" name="drone" value="huey"
         checked>

radio input value

<input type="radio" name="test" id="test" value="this is the value">