Dropdown won't select and open div... What am I doing wrong?

On our Offices page if you click the dots on the map it opens a div below and changes the sidebar contents. We added a dropdown so you could select cities on mobiles. Since I recreated the website and copied over the code I've done something and it doesn't work anymore.

I know the problem has something to do with this bit of code

$('#continent').change(function() {    $('.targetDiv').hide();    $('#worldwide').hide();    var target = $("select option:selected").attr('target');    var value = $("select option:selected").attr('value');    console.log($('#'+ value));    $(".detail-container").empty();    $('#'+ value).clone().show().appendTo(".detail-container");    $('#div'+ target).show();    if (value == "worldwide") {        $('.slidingDiv').slideUp();    }});

Here is the full code

jQuery(function($) {    $(".dot").show();    $('.dot').click(function() {        $(".slidingDiv").slideDown('slow');    });    $('#continent').change(function() {        $(".slidingDiv").slideDown('slow');    });});jQuery(function($) {    $('#showSingle').click(function() {        $('.targetDiv').show();    });    $('.dot').click(function() {        $('.targetDiv').hide();        $('#div'+ $(this).attr('target')).show();        var value = $(this).attr('city');        $(".detail-container").empty();        $('#'+ value).clone().show().appendTo(".detail-container");        $('#'+ value).show();        $('#continent').val(value);    });    $('#continent').change(function() {        $('.targetDiv').hide();        $('#worldwide').hide();        var target = $("select option:selected").attr('target');        var value = $("select option:selected").attr('value');        console.log($('#'+ value));        $(".detail-container").empty();        $('#'+ value).clone().show().appendTo(".detail-container");        $('#div'+ target).show();        if (value == "worldwide") {            $('.slidingDiv').slideUp();        }    });});

I'm sure this is something simple for someone who knows Javascript.

Thanks.