Fix JS code: Append multiple values out of checkboxes to url

I found this code that replaced the link text (= "Show") by the checked checkbox values. Now, I am looking for a code that appends/removes the checked/unchecked values to the link url itself, e.g. does this:

<a href="/best/?price=123&amp;feature=Teamsport">Show</a>

Here is the code:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div>
  <input type="checkbox" name="options[]" value="Teamsport" />
  <input type="checkbox" name="options[]" value="Individual sport" />
</div>

<div><a href="/best/?price=123&amp;feature=">Show</a></div>

And

function calculate() {
var arr = $.map($('input:checkbox:checked'), function(e, i) {
    return +e.value;
});
$("[href$='feature=']").text('the checked values are: ' + arr.join(','));
}

calculate();
$('div').delegate('input:checkbox', 'click', calculate);