Request.JSONP

HTML

<div class='wrapper'>
    <p class="click">CLICK ME</p>
    <div id='post'></div>
</div>

CSS

.click
{
    color: blue;
    text-decoration: underline;
}
.loaded
{
    background-color: red;
    display: none;
}

JavaScript

$('.click').click(function(){
  $.ajax({
      type: 'POST',
    url: '/echo/html/',
      data: { html: "<p class='loaded'>hello ajax!<br/>hello ajax!<br/>hello ajax!<br/>hello ajax!</p>"},
    success: function(data) {
      $('#post').html(data);
        $('.loaded').slideDown();
    }
  });
});