$("body").on("click",".layui-input-inline:eq(3)",function(){

        $(this).find("dd").click(function(){

            var examId = $(this).attr("lay-value");

            if("0"!=examId){

                var herf = "/exam_papers?exam_id="+examId;

                $.getJSON(herf, function(json) {

                    var n = json.length;

                    var html = "";for(var i=0;i<n;i++){var html = "<option value='"+ json[i].id +"'>"+json[i].title+"</option>";

                        $("#examPaperSelect").append(html);

                    }

                });

            }

        });

    });