还是jquery计算那个的问题

Question

所要表达的问题 已经在图片上了 下面代码

Answer 1

做成一个函数就行了

            $("#time").change(function () {
                var time =parseInt( this.value);

                var num, unit;
                if (time < 30) { num = time; unit = '天' }
                else if (time < 365) { num = time / 30; unit = '月' }
                else { num = time / 365; unit = '年'; }

                var d = new Date($("#EntTime32").val().replace(/-/g, "/"));
                d = getDate(d, num, unit);


                var s1 = d.getFullYear() + "-" + (d.getMonth() + 1) + "-" + d.getDate();
                $('#EntTime31').val(s1);


            });
            function getDate(d, num, unit) {
                switch (unit) {
                    case '天':
                        d.setDate(d.getDate() + num);
                        break;
                    case '月':
                        var m1 = d.getMonth() + 1 + num;
                        if (m1 > 12) m1 = m1 % 12;
                        d.setMonth(d.getMonth() + num);
                        if (d.getMonth() + 1 != m1) {//出现进位操作
                            do { d.setDate(d.getDate() - 1); } while (d.getMonth() + 1 != m1);
                        }
                        break;
                    case '年':
                        d.setYear(d.getFullYear() + num);
                        break;
                }
                return d;
            }