demo.html

<!DOCTYPE html>
<!-- If you’re looking for the online demo, it’s here: http://mathiasbynens.be/demo/placeholder -->
<html lang="en">
 <head>
  <meta charset="utf-8">
  <title>HTML5 placeholder jQuery Plugin</title>
  <style>
   body, input, textarea { font: 1em/1.4 Helvetica, Arial; }
   label code { cursor: pointer; float: left; width: 150px; }
   input { width: 14em; }
   textarea { height: 5em; width: 20em; }
   .placeholder { color: #aaa; }
   .note { border: 1px solid orange; padding: 1em; background: #ffffe0; }
  </style>
 </head>
 <body>
  <h1>HTML5 Placeholder jQuery Plugin</h1>
  <p>Check out <a href="http://github.com/mathiasbynens/Placeholder-jQuery-Plugin">the HTML5 Placeholder jQuery Plugin project page on GitHub</a>.</p>
  <pre><code>$(function() {<br> $('input, textarea').placeholder();<br>});</code></pre>
  <form action="placeholder" method="get">
   <p><label><code>type=search</code> <input type="search" name="search" placeholder="Search this site…"></label></p>
   <p><label><code>type=text</code> <input type="text" name="name" placeholder="e.g. John Doe"></label></p>
   <p><label><code>type=email</code> <input type="email" name="email" placeholder="e.g. address@example.ext"></label></p>
   <p><label><code>type=url</code> <input type="url" name="url" placeholder="e.g. http://mathiasbynens.be/"></label></p>
   <p><label><code>type=tel</code> <input type="tel" name="tel" placeholder="e.g. +32 472 77 69 88"></label></p>
   <p><label><code>type=password</code> <input type="password" name="password" placeholder="e.g. h4x0rpr00fz"></label></p>
   <p><label><code>textarea</code> <textarea name="message" placeholder="Your message goes here"></textarea></label></p>
   <p><input type="submit" value="type=submit"></p>
  </form>
  <p>— <a href="http://mathiasbynens.be/" title="Mathias Bynens, front-end developer">Mathias</a></p>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
  <script src="jquery.placeholder.js"></script>
  <script>
   $(function() {
    // Invoke the plugin
    $('input, textarea').placeholder();
    // That’s it, really.
    // Now display a message if the browser supports placeholder natively
    var isInputSupported = 'placeholder' in document.createElement('input'),
        isTextareaSupported = 'placeholder' in document.createElement('textarea'),
        html;
    if (isInputSupported && isTextareaSupported) {
     html = '<strong>Your current browser natively supports <code>placeholder</code> for <code>input</code> and <code>textarea</code> elements.</strong> The plugin won’t run in this case, since it’s not needed. If you want to test the plugin, use an older browser ;)';
    } else if (isInputSupported) {
     html = '<strong>Your current browser natively supports <code>placeholder</code> for <code>input</code> elements, but not for <code>textarea</code> elements.</strong> The plugin will only do its thang on the <code>textarea</code>s.';
    }
    if (html) {
     $('<p class="note">' + html + '</p>').insertAfter('form');
    }
   });
  </script>
 </body>
</html>