contoh post aja

rand=222;
        data={type:"search",id:words};
            link='index2.php?option=com_rs&l=l&t=tarif&type=search';
            link=link+'&rand='+rand;
        $.post(link,data,function(res){
            //console.log(res);
            $("#listItem").empty().html(res);
        });
//=============ajax
    var request = $.ajax({
     url: "index2.php?option=com_rs&view=pat&t=pasien&l=l",
     type: "POST",
     data: data,
     dataType: "json",
     success: function(msg) {
        $("#listItem").empty().html(msg.res);
     }
    });