[jquery] jQuery datepicker, onSelect won't work

$('.date-picker').datepicker({
                    autoclose : true,
                    todayHighlight : true,
                    clearBtn: true,
                    format: 'yyyy-mm-dd', 
                    onSelect: function(value, date) { 
                         alert(123);
                    },
                    todayBtn: "linked",
                    startView: 0, maxViewMode: 0,minViewMode:0

                    }).on('changeDate',function(ev){
                    //this is right events ,trust me
                    }
});