backup: snapshot before optimization

2026-06-04 16:25:43 +08:00
commit ff2700c067
47 changed files with 3332 additions and 0 deletions
@@ -0,0 +1,44 @@
+function formatTime(seconds) {
+  var m = Math.floor(seconds / 60)
+  var s = seconds % 60
+  return (m < 10 ? '0' : '') + m + ':' + (s < 10 ? '0' : '') + s
+}
+
+function formatDuration(seconds) {
+  if (seconds < 60) return seconds + '秒'
+  var m = Math.floor(seconds / 60)
+  var s = seconds % 60
+  return s > 0 ? m + '分' + s + '秒' : m + '分钟'
+}
+
+function getDaysInMonth(year, month) {
+  return new Date(year, month, 0).getDate()
+}
+
+function getMonthCalendar(year, month) {
+  var firstDay = new Date(year, month - 1, 1)
+  var lastDay = new Date(year, month, 0)
+  var daysInMonth = lastDay.getDate()
+  var startDayOfWeek = firstDay.getDay()
+
+  var weeks = []
+  var week = [null, null, null, null, null, null, null]
+
+  for (var d = 1; d <= daysInMonth; d++) {
+    var dow = (startDayOfWeek + d - 1) % 7
+    week[dow] = d
+    if (dow === 6 || d === daysInMonth) {
+      weeks.push(week.slice())
+      week = [null, null, null, null, null, null, null]
+    }
+  }
+
+  return weeks
+}
+
+module.exports = {
+  formatTime: formatTime,
+  formatDuration: formatDuration,
+  getDaysInMonth: getDaysInMonth,
+  getMonthCalendar: getMonthCalendar
+}