Question

Could someone please have a look at this and tell me what I’m doing wrong. It’s a span with class move.up on click the .content-wrapper element will move and the .move.up wil change class name to .move.dwn
later the move.dwn.click(function() should start but I can never make it to that point, why?

 <style type="text/css">
    .content-wrapper {
        height:100px;
        width:100px;
        background-color:orange;
        position:relative;
    }
    span.move {
        background-color:fuchsia;
        cursor:pointer;
    }
</style>

<span class="move up">click here</span>
<div class="content-wrapper"></div>

<script type="text/javascript">
    $(document).ready(function() {

        $('.move.up').click(function() {
            alert("up");
            $('.content-wrapper').animate({'left': '+=568px'}, 'slow');
            $(this).removeClass('up');
            $(this).addClass('dwn');
        });

        $('.move.dwn').click(function() {
            alert("dwn");
            $('.content-wrapper').animate({'left': '-=568px'}, 'slow');
            $(this).removeClass('dwn');
            $(this).addClass('up');
        });
    });

</script>

Answer 1

Your problem lies in the .click() function not updating the elements they are tied to. Luckily jQuery has a solution for this in on() (previously live()). This will dynamically bind your events and after updates it will still select on class.

Try this:

<script type="text/javascript">
$(document).ready(function() {

    $('.move.up').on('click', function() {
        alert("up");
        $('.content-wrapper').animate({'left': '+=568px'}, 'slow');
        $(this).removeClass('up');
        $(this).addClass('dwn');
    });

    $('.move.dwn').on('click', function() {
        alert("dwn");
        $('.content-wrapper').animate({'left': '-=568px'}, 'slow');
        $(this).removeClass('dwn');
        $(this).addClass('up');
    });
});