JavaScript checkbox checked not working

Code :

var str = '2,4';
var accept_message = str .split(',');


var accept_message_html = '';
    var accpet_message_Obj = {1:'Friends',2:'Models',3:'Premiums',4:'Basics'};
    $.each(accpet_message_Obj, function(key, value) {
        accept_message_html += '<span style="padding-right:30px;"><input style="float:none;" type="checkbox" name="privacy_options[]"' + (key == accept_message[key] ? ' checked="checked"' : '') + ' value="'+key+'" /> '+value+'</span>\n';
    });

   $('#content-area').html(accept_message_html);

Above coding not working. I need to checkbox checked which values are 2 and 4 but there is no checkbox selected. :(

JSFIDDLE