## Ice Cream

Start with everything visible, then hide with JavaScript:
Key piece here is: `$("#icecream_options").hide();`

Example 9.5 - Separation from Markup - Example 9.5 (Without Styles)<form method="get" name="ice_cream" id="ice_cream" action="https://cscie12.dce.harvard.edu/echo" enctype="application/x-www-form-urlencoded"><div> Would you like ice cream?<br/><label><input type="radio" name="want" id="ic_yes" value="yes"/> Yes</label><label><input type="radio" name="want" id="ic_no" value="no"/> No</label></div><fieldset id="icecream_options"><legend>Ice Cream Options</legend><p>How would you like it?</p><label><input type="radio" id="container_cup" name="container" value="cup"/> Cup</label><label><input type="radio" id="container_cone" name="container" value="cone"/> Cone</label><p>Pick your toppings:</p><label><input type="checkbox" name="toppings" id="toppings_wc" value="whipcream"/> Whipped cream</label><label><input type="checkbox" name="toppings" id="toppings_j" value="jimmies"/> Jimmies</label><label><input type="checkbox" name="toppings" id="toppings_nuts" value="nuts"/> Nuts</label><label><input type="checkbox" name="toppings" id="toppings_cherry" value="cherry"/> Cherry</label></fieldset><p><input type="submit"/></p></form>#icecream_options { background-color: #eee; margin-left: 2em; } label { display: block; }$(document).ready(function(){ $("#icecream_options").hide(); $("input[name='want']").click(function(){ displayIceCreamOptions(); }); }); function displayIceCreamOptions() { if ($("input[name='want']:checked").val() == 'yes') { $('#icecream_options').fadeIn('slow'); } else { $('#icecream_options').fadeOut('slow'); } }

- Markup
- Style
- Script
- Screenshot

     <form method="get" name="ice_cream" id="ice_cream" action="https://cscie12.dce.harvard.edu/echo">
       <div>Would you like ice cream?
         <br/>

         <label>
           <input type="radio" name="want" id="ic_yes" value="yes"/>
    Yes     </label>
         <label>
           <input type="radio" name="want" id="ic_no" value="no"/>
    No     </label>
       </div>
       <fieldset id="icecream_options">
         <legend>Ice Cream Options     </legend>
         <p>How would you like it?
         </p>
         <label>
           <input type="radio" id="container_cup" name="container" value="cup"/>
    Cup     </label>
         <label>
           <input type="radio" id="container_cone" name="container" value="cone"/>
    Cone     </label>
         <p>Pick your toppings:
         </p>
         <label>
           <input type="checkbox" name="toppings" id="toppings_wc" value="whipcream"/>
    Whipped cream     </label>
         <label>
           <input type="checkbox" name="toppings" id="toppings_j" value="jimmies"/>
    Jimmies     </label>
         <label>
           <input type="checkbox" name="toppings" id="toppings_nuts" value="nuts"/>
    Nuts     </label>
         <label>
           <input type="checkbox" name="toppings" id="toppings_cherry" value="cherry"/>
    Cherry     </label>   </fieldset>
       <p>
         <input type="submit"/>

       </p>
     </form>

In `style` element (`<style>`) within `head` element:

    #icecream_options {
        background-color: #eee;
        margin-left: 2em;
    }
    label { display: block; }

In `script` element within `head` element (`<script>`):

    $(document).ready(function(){
        $("#icecream_options").hide();
        $("input[name='want']").click(function(){
          displayIceCreamOptions();
        });
    });
    function displayIceCreamOptions() {
        if ($("input[name='want']:checked").val() == 'yes') {
          $('#icecream_options').fadeIn('slow');
        } else {
          $('#icecream_options').fadeOut('slow');
        }
    }