diff --git a/js/terrible_moments.js b/js/terrible_moments.js
new file mode 100644
index 0000000000000000000000000000000000000000..a713352712f87a161b590afabf956ba54b61d147
--- /dev/null
+++ b/js/terrible_moments.js
@@ -0,0 +1,129 @@
+import moment from 'moment';
+
+/**
+ * 计算以周为单位的日期单元
+ * @param {String} dateOfFirst 起始日期 
+ */
+const weekUnits = (dateOfFirst) => {
+  const result = [];
+  let p = moment(dateOfFirst).weekday(0);
+  do {
+    const start = format(p);
+    const end = format(p.add(1, 'weeks'));
+    p.subtract(1, 'weeks');
+    result.push({
+      display: getWeekName(p),
+      start,
+      end
+    });
+    p.add(1, 'weeks');
+  } while (p.isBefore(moment()));
+  return result;
+}
+
+/**
+ * 第 n 周
+ * @param {Moment} p 日期
+ */
+const getWeekName = (p) => {
+  let resultYear = '';
+  const yearOfSaturday = p.weekday(6).year();
+  if (yearOfSaturday !== moment().year()) {
+    resultYear = `${yearOfSaturday}年-`;
+  }
+  p.weekday(0);
+  let resultWeek = '';
+  if (p.weekday(7).isSameOrAfter(moment().weekday(0).hour(0).minute(0).second(-1))) {
+    resultWeek = '上';
+  }
+  p.weekday(-7);
+  if (p.weekday(7).isAfter(moment())) {
+    resultWeek = '本';
+  }
+  p.weekday(-7);
+  if (p.weekday(6) < moment().weekday(-7)) {
+    resultWeek = p.weekday(0).week();
+  }
+  p.weekday(0);
+  if (['本', '上'].includes(resultWeek)) {
+    resultYear = '';
+  }
+  return `${resultYear}${resultWeek}周`;
+}
+
+/**
+ * 计算以月为单位的日期单元
+ * @param {String} dateOfFirst 起始日期
+ */
+const monthUnits = (dateOfFirst) => {
+  const result = [];
+  let p = moment(dateOfFirst).startOf('month');
+  do {
+    const start = format(p);
+    const end = format(p.endOf('month').add(1, 'second'));
+    p.subtract(1, 'months');
+    result.push({
+      display: getMonthName(p),
+      start,
+      end
+    });
+    p.add(1, 'months');
+  } while (p.isBefore(moment()));
+  return result;
+}
+
+/**
+ * xxxx 年
+ * @param {Moment} p 日期
+ */
+const getMonthName = (p) => {
+  let year = '';
+  let month = '';
+  if (p.year() != moment().year()) {
+    year = `${p.year()}年-`;
+  }
+  if (p.endOf('month').isSameOrAfter(moment().startOf('month').hour(0).minute(0).second(-1))) {
+    month = '上';
+  }
+  if (p.endOf('month').isSameOrAfter(moment())) {
+    month = '本';
+  }
+  p.startOf('month');
+  if (p.isBefore(moment().startOf('month').subtract(1, 'months'))) {
+    month = p.month() + 1;
+  }
+  if (['本', '上'].includes(month)) {
+    year = '';
+  }
+  return `${year}${month}月`;
+}
+
+/**
+ * 计算以年为单位的日期单元
+ * @param {String} dateOfFirst 起始日期
+ */
+const yearUnits = (dateOfFirst) => {
+  let p = moment(dateOfFirst).startOf('year');
+  const result = [];
+  do {
+    const start = format(p);
+    const end = format(p.add(1, 'year'));
+    p.subtract(1, 'year');
+    result.push({
+      display: `${p.year()}年`,
+      start,
+      end
+    });
+    p.add(1, 'year');
+  } while (p.isBefore(moment()));
+  return result;
+}
+
+const format = (moment) => moment.format('YYYY-MM-DD');
+
+export default {
+  weekUnits,
+  monthUnits,
+  yearUnits,
+  format
+};