how to get values of radio button in javascript code example

Example 1: radio button group get value javascript

$('input[name=gender]:checked').val();

Example 2: getting value from radio button javascript

var elements = document.getElementsByName('radioButton');
    var checkedButton;
    console.log(elements);
    elements.forEach(e => {
        if (e.checked) {
            //if radio button is checked, set sort style
            checkedButton = e.value;
        }
    });