JS实现日期加减的方法

        $(function() {
            $("#<%=tbcxrq.ClientID %>").change(function() { CaclDate(); });
            $("#<%=tblq.ClientID %>").change(function() { CaclDate(); });
            //根据龄期计算试验时间
            function CaclDate() {

if ($("#<%=tblq.ClientID %>").val() == "" || $("#<%=tbcxrq.ClientID %>").val() == "") {
                    $("#<%=tbyqsyrq.ClientID %>").val("");
                }
                else {
                    var MoldingDate = $("#<%=tbcxrq.ClientID %>").val();
                    MoldingDate = MoldingDate.replace("-", "/")
                    var d = new Date(MoldingDate);
                    var AgeDate = $("#<%=tblq.ClientID %>").val();
                    d.setDate(d.getDate() + parseInt(AgeDate));
                    var month = d.getMonth() + 1;
                    if (parseInt(month) < 10)
                        month = "0" + month;
                    var day = d.getDate();
                    if (parseInt(day) < 10)
                        day = "0" + day;

                    var date = (d.getFullYear()) + "-" + month + "-" + day;
                    $("#<%=tbyqsyrq.ClientID %>").val(date);
                }
            }
        });
    </script>