I have this js code:

$("#startSearch").live("click", function(event){
                    $("input:checkbox[name='searchId']:checked").each(function(){
                        var searchId = $(this).val();
                        var host = '';
                        $.post("php/autosearch-get-host.php",{sId: searchId},function(data){
                           host = 'http://' + data + '/index.php';
                        });
                        //alert(host);
                        $.getJSON(host,{searchId: $(this).val()},function(){
                            pagination("php/pagination.php", $('#currentPage').val(), $('#sortBy').val(), $("#sortMode").val(), "autosearch");
                        });

                    });
                });

The php file php/autosearch-get-host.php returns a string with the host name. What i want is to get the host from the database, create the URL using string concatenation and pass it as an argument to another $.post. $.post should use that URL like this:

$.getJSON(host,{searchId: $(this).val()},function()
{
    pagination("php/pagination.php", $('#currentPage').val(), $('#sortBy').val(), $("#sortMode").val(), "autosearch");
});