Tab event on click

00001.js

$('a[href="#tab_anc2"]').click(function(){
    var hn = $('#hn').val(),
        gravida = $('#sl_anc_gravida2').val();

    anc.ajax.get_history(hn, gravida, function(err, data){
       anc.set_history(data);
    });
});

ฟังก์ชัน anc.ajax.get_history()

get_history: function(hn, gravida, cb){
            var url = 'pregnancies/anc_get_history',
                params = {
                    hn: hn,
                    gravida: gravida
                };

            app.ajax(url, params, function(err, data){
                err ? cb(err) : cb(null, data);
            });
        }