show and hide divs based on radio button click [duplicate]

You’re on the right track, but you forgot two things:

1. add the desc classes to your description divs
2. You have numeric values for the input but text for the id.

I have fixed the above and also added a line to initially hide() the third description div.

Check it out in action – http://jsfiddle.net/VgAgu/3/

HTML

<div id="myRadioGroup">
    2 Cars<input type="radio" name="cars" checked="checked" value="2"  />
    3 Cars<input type="radio" name="cars" value="3" />

    <div id="Cars2" class="desc">
        2 Cars Selected
    </div>
    <div id="Cars3" class="desc" style="display: none;">
        3 Cars
    </div>
</div>

JQuery

$(document).ready(function() {
    $("input[name$='cars']").click(function() {
        var test = $(this).val();

        $("div.desc").hide();
        $("#Cars" + test).show();
    });
});