watch.js & if.js<p>Your name: <input type="text" name="name"</p> <p>Hello <span id="name-out"></span>!</p> <script type="text/javascript"> watch.add('name', function(value) { $('#name-out').text(value); }); </script> Simple if <p>How many wheels does a bicycle have? <input type="text" name="wheels"> (in words)</p> <p> <span class="if" data-if="wheels=two">Correct!</span> <span class="if" data-if="wheels!=two">Try
