EasyUI分页索引不能输入非数字

//分页索引不能输入非数字
        function PagerCheck() {
            $(".pagination-num").keydown(function (event) {
                event = event || window.event;
                if (event.keyCode == 13)
                    event.keyCode = 9;
                if ((event.keyCode < 48 || event.keyCode > 57) && event.keyCode != 8 && event.keyCode != 46 && (event.keyCode < 96 || event.keyCode > 105)) {
                    event.preventDefault();
                    event.returnValue = false;
                }
            });

        }