小编Zom*_*man的帖子

我到处寻找并试图从一组单选按钮中获取所选值.

这是我的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>

这是我的.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;

我一直都没有定义.