How to get value of selected radio button?

Question

I want to get the selected value from a group of radio buttons.

Here's my HTML:

<div id="rates">   <input type="radio" id="r1" name="rate" value="Fixed Rate"> Fixed Rate   <input type="radio" id="r2" name="rate" value="Variable Rate"> Variable Rate   <input type="radio" id="r3" name="rate" value="Multi Rate" checked="checked"> Multi Rate   </div> 

Here's my js:

var rates = document.getElementById('rates').value; var rate_value; if(rates =='Fixed Rate'){     rate_value = document.getElementById('r1').value;      }else if(rates =='Variable Rate'){     rate_value = document.getElementById('r2').value;      }else if(rates =='Multi Rate'){     rate_value = document.getElementById('r3').value; }    document.getElementById('results').innerHTML = rate_value; 

I keep getting undefined.

Answer 1

This works in IE9 and above and all other browsers.

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