Show/Hide div on click using jQuery

Question

I've got 4 divs and on click of the navigation I want to show one of them and hide the others. I have it working but I feel its not as smooth as I know it could be, its definitely my code that needs to be refactored! Heres what I have.

$('#details-speakers').click(function() {

    $('#home').slideUp('slow', function() {});
    $('#sessions-content').slideUp('slow', function() {});
    $('#cases-content').slideUp('slow', function() {});
    $('html,body').animate({scrollTop: $("#details").offset().top - 16}, 200, "swing");
  $('#speakers-content').slideDown('slow', function() {
        $('#details-speakers').addClass('selected');
        //Remove other classes
        $('#details-sessions').removeClass('selected');
        $('#details-cases').removeClass('selected');
        $('#details-workshops').removeClass('selected');
  });
});
$('#details-sessions').click(function() {

    $('#home').slideUp('slow', function() {});
    $('#speakers-content').slideUp('slow', function() {});
    $('#cases-content').slideUp('slow', function() {});
    $('html,body').animate({scrollTop: $("#details").offset().top - 16}, 200, "swing");
  $('#sessions-content').slideDown('slow', function() {
    $('#details-sessions').addClass('selected');
        //Remove other classes
        $('#details-speakers').removeClass('selected');
        $('#details-cases').removeClass('selected');
        $('#details-workshops').removeClass('selected');
  });
});
$('#details-cases').click(function() {

    $('#home').slideUp('slow', function() {});
    $('#speakers-content').slideUp('slow', function() {});
    $('#sessions-content').slideUp('slow', function() {});
    $('html,body').animate({scrollTop: $("#details").offset().top - 16}, 200, "swing");
  $('#cases-content').slideDown('slow', function() {
    $('#details-cases').addClass('selected');
        //Remove other classes
        $('#details-speakers').removeClass('selected');
        $('#details-sessions').removeClass('selected');
        $('#details-workshops').removeClass('selected');
  });
});

Answer 1

The smoothness or lackthereof is not the fault of your code. Some browsers are slow. It's just not something that can be fixed from JS.

You can make your code shorter but I don't think there will be any material performance improvements.

$('#details-speakers').click(function() {
    $('#home, #sessions-content, #cases-content').slideUp('slow');
    $('body').animate({scrollTop: $("#details").offset().top - 16}, 200, "swing");
  $('#speakers-content').slideDown('slow', function() {
        $('#details-speakers').addClass('selected');
        //Remove other classes
        $('#details-sessions, #details-cases, #details-workshops').removeClass('selected');
  });
});

$('#details-sessions').click(function() {
    $('#home, #speakers-content, #cases-content').slideUp('slow');
    $('body').animate({scrollTop: $("#details").offset().top - 16}, 200, "swing");
  $('#sessions-content').slideDown('slow', function() {
    $('#details-sessions').addClass('selected');
        //Remove other classes
        $('#details-speakers, #details-cases, #details-workshops').removeClass('selected');
  });
});

$('#details-cases').click(function() {
    $('#home, #speakers-content, #sessions-content').slideUp('slow');
    $('body').animate({scrollTop: $("#details").offset().top - 16}, 200, "swing");
  $('#cases-content').slideDown('slow', function() {
    $('#details-cases').addClass('selected');
        //Remove other classes
        $('#details-speakers, #details-sessions, #details-workshops').removeClass('selected');
  });
});

Answer 2

Ctrl+C and Ctrl+V programming leads straight to hell... I think you can do something like that:

var divs = $('#details-speakers, #details-sessions, #details-cases');

divs.click(function () {
    divs.not(this).add('#home').slideUp('slow');
    // animation with home and body
    $(this).slideDown('slow', function () {
        $(this).addClass('selected');
        divs.not(this).removeClass('selected');
    });
}

And performance depends on a lot of thing (firebug is on, divs' content, divs' style, half-transparent backgrounds etc.) -- not just poor javascript.

Answer 3

If it's a cleaner approach you're looking for how about something like this:

$(".my4Divs").click(function() {
    var self = this;
    $(".my4Divs").each(function() {
       if(self == this) {
          $(self).addClass("selected");
          ...
          ...
          return;
       }
       $(this).removeClass("selected");
       ...
       ...
    });
});