/** * [zeroPadding 小于10的數字補0，必填] * @param {[Int]} value [description] * @return {[String]} [description] */export function zeroPadding(value){ return value < 10 ? `0${value}` : value;}/** * [_isDateStrSeparatorCh 判斷日期格式字符串的分隔符是否是中文] * @param {[String]} str [必填] * @return {[String]} [分隔符] */function _getDateStrSeparator(str, startIndex, endIndex) { startIndex = startIndex ? startIndex : 4; endIndex = endIndex ? endIndex : 5; let separator = str.slice(startIndex, endIndex); if (separator === '年' || separator === '月' ) { separator = 'Ch'; } return separator;}/** * [_isDateStrSeparatorCh 判斷日期格式字符串的分隔符是否是中文] * @param {[String]} str [必填] * @return {[String]} [分隔符] */function _isDateStrSeparatorCh(str) { if ( str.indexOf('年')!=-1 || str.indexOf('月')!=-1 ) { return true; } return false;}/** * [getFormatDateStr 獲得指定日期格式的字符串] * @param {[String or Date]} date [要轉換的日期，必填] * @param {[String]} dateFormatStr [要轉化的目標格式，必填，2016-11-22之間的分隔符可任意，可選項： * 'yyyy-mm-dd hh:mm:ss','yyyy/mm/dd hh:mm:ss','yyyy.mm.dd hh:mm:ss','yyyy年mm月dd hh:mm:ss', * 'yyyy-mm-dd hh:mm', * 'mm-dd hh:mm', * 'yyyy-mm-dd', * 'mm-dd', * 'hh:mm:ss', * 'hh:mm' * ] * @return {[String]}  [時間格式字符串] */export function getFormatDateStr(date, dateFormatStr) { if ( !(date instanceof Date) ) { if ( date.indexOf('-') != -1 ) { date.replace(//-/g,'/'); }  date = new Date(date); } dateFormatStr = dateFormatStr.toLowerCase(); if (!dateFormatStr){ return false; } let returnStr = '', separator = _getDateStrSeparator(dateFormatStr), year = date.getFullYear(),  month = date.getMonth() + 1,  day = date.getDate(),  hour = date.getHours(),  minute = date.getMinutes(), second = date.getSeconds(); if ( /^yyyy(.{1})mm(.{1})dd hh:mm:ss$/.test(dateFormatStr) ) { if (_isDateStrSeparatorCh(dateFormatStr)) { returnStr = `${year}年${zeroPadding(month)}月${zeroPadding(day)}日`; } else { separator = returnStr = `${year}${separator}${zeroPadding(month)}${separator}${zeroPadding(day)}`; } returnStr += ` ${zeroPadding(hour)}:${zeroPadding(minute)}:${zeroPadding(second)}`; } else if ( /^yyyy(.{1})mm(.{1})dd hh:mm$/.test(dateFormatStr) ) { if (_isDateStrSeparatorCh(dateFormatStr)) { returnStr = `${year}年${zeroPadding(month)}月${zeroPadding(day)}日`; } else { returnStr = `${year}${separator}${zeroPadding(month)}${separator}${zeroPadding(day)}`; } returnStr += ` ${zeroPadding(hour)}:${zeroPadding(minute)}`; } else if ( /^mm(.{1})dd hh:mm$/.test(dateFormatStr) ) { if (_isDateStrSeparatorCh(dateFormatStr)) { returnStr = `${zeroPadding(month)}月${zeroPadding(day)}日`; } else { separator = _getDateStrSeparator(dateFormatStr, 2, 3); returnStr = `${zeroPadding(month)}${separator}${zeroPadding(day)}`; } returnStr += ` ${zeroPadding(hour)}:${zeroPadding(minute)}`; } else if ( /^yyyy(.{1})mm(.{1})dd$/.test(dateFormatStr) ) { if (_isDateStrSeparatorCh(dateFormatStr)) { returnStr = `${year}年${zeroPadding(month)}月${zeroPadding(day)}日`; } else { returnStr = `${year}${separator}${zeroPadding(month)}${separator}${zeroPadding(day)}`; } } else if ( /^mm(.{1})dd$/.test(dateFormatStr) ) { if (_isDateStrSeparatorCh(dateFormatStr)) { returnStr = `${zeroPadding(month)}月${zeroPadding(day)}日`; } else { separator = _getDateStrSeparator(dateFormatStr, 2, 3); returnStr = `${zeroPadding(month)}${separator}${zeroPadding(day)}`; } } else if ( /^hh:mm:ss$/.test(dateFormatStr) ) { returnStr = `${zeroPadding(hour)}:${zeroPadding(minute)}:${zeroPadding(second)}`; } else if ( /^hh:mm$/.test(dateFormatStr) ) { returnStr = `${zeroPadding(hour)}:${zeroPadding(minute)}`; } return returnStr;}

/** * [getDayPrevAfter 獲得n天前/后的日期] * @param {[String]} date [日期，非必填參數，表示調用時的時間] * @param {[String]} type [前一天還是后一天，非必填參數，默認后一天] * @param {[Int]} daysNum [天數，非必填參數，默認一天] * @return {[Date]}  [description] */export function getDayPrevAfter(date, type, daysNum) { date = date ? date : new Date(); type = type ? type : 'after'; daysNum = daysNum ? daysNum : 1; if ( !(date instanceof Date) ) { if ( date.indexOf('-') != -1 ) { date.replace(//-/g,'/'); } date = new Date(date); } let returnDate = date; if (type === 'prev') { returnDate = new Date(date.getTime() - (daysNum * 24 * 60 * 60 * 1000)); } else if (type === 'after') { returnDate = new Date(date.getTime() + (daysNum * 24 * 60 * 60 * 1000)); } return returnDate;}

/** * [formatDateWithTimeZone 格式化日期帶時區，ISO 8601] * @param {[Date]} date [日期，非必填參數，表示調用時的時間] * @return {[String]} [ISO 8601格式的日期，example: 2016-11-21T14:09:15+08:00] */export function formatDateWithTimeZone(date) { date = date ? date : new Date(); if ( !(date instanceof Date) ) { if ( date.indexOf('-') != -1 ) { date.replace(//-/g,'/'); } date = new Date(date); } let tzo = -date.getTimezoneOffset(), dif = tzo >= 0 ? '+' : '-', pad = function (num) {  let norm = Math.abs(Math.floor(num));  return zeroPadding(norm); }; return `${date.getFullYear()}-${pad(date.getMonth() + 1)}-${pad(date.getDate())}T${pad(date.getHours())}:${pad(date.getMinutes())}:${pad(date.getSeconds())}${dif}${pad(tzo / 60)}:${pad(tzo % 60)}`;}

/** * [countDownBySecond 倒計時] * @param {[Int]} restSeconds [剩余秒數，必填] * @param {[Int]} timeInterval [時間間隔，非必填，默認1000ms] * @param {[Function]} func [每倒計時一次，就需要執行一次的回調函數名，非必填] * @param {[Function]} endFun [倒計時結束需要執行的函數名，非必填] * @return {[null]} [無返回值] */export function countDownBySecond(restSeconds, timeInterval, func, endCallback) { let timer = null; let total = restSeconds; timeInterval = timeInterval ? timeInterval : 1000; timer = setInterval(function() { --total; if (total <= 0) {  clearInterval(timer);  endCallback && endCallback(); } func && func(total); }, timeInterval);}

/** * [monthSize 獲得指定日期所在月的天數] * @param {[Date]} oDate [指定的日期，非必填，默認為當天] * @return {[Int]} [總天數] */function monthSize(oDate) { oDate = oDate ? oDate : new Date(); let year = oDate.getFullYear(), month = oDate.getMonth(), _oDate = new Date(); _oDate.setFullYear(year); _oDate.setMonth(month + 1, 0); return _oDate.getDate();}

/** * [getCalendarMonth 獲得指定日期所在月的第一周到第四/五周的數據組合，形如： * [{ "date": "2016/10/30", //日期字符串 "dateNum": 30, //日 "isCurMonth": false, //是否當前月 "weekIndex": 0 //是本月的第幾周，下標從0開始 },{ "date": "2016/10/31", "dateNum": 31, "isCurMonth": false, "weekIndex": 0 },{ "date": "2016/11/1", "dateNum": 1, "day": 2, "isCurMonth": true, "isToday": false, "weekIndex": 0 }] ] * @param {[Date]} param [指定的日期，非必填，默認為當天] * @return {[Array]} [獲得指定日期所在月的第一周到第四/五周的數據組合] */export function getCalendarMonth(date) { date = date ? date : new Date(); let y = date.getFullYear(); let m = date.getMonth(); let _m; let firstDay = new Date(y, m, 1).getDay(); //當月第一天 周期 let days = monthSize(date);//當月天數 let prevMonthDays = monthSize(new Date(y, m - 1));//上月天數 let initPrevDay = prevMonthDays - firstDay; let lines = Math.ceil((firstDay + days) / 7); _m = new Array(lines * 7); let nextMonthDay = 0; for (let i = 0; i < _m.length; i++) { let weekIndex = parseInt(i / 7); if (i < firstDay) {  let date = ++initPrevDay;  if (m === 0 && date > 7) {  _m[i] = {   isCurMonth: false,   dateNum: date,   weekIndex,   date: `${y - 1}/${12}/${date}`  };  } else {  _m[i] = {   isCurMonth: false,   dateNum: date,   weekIndex,   date: `${y}/${m}/${date}`  };  } } else if (i >= (firstDay + days)) {  let date = ++nextMonthDay;  if (m === 11 && date <= 7) {  _m[i] = {   isCurMonth: false,   dateNum: date,   weekIndex,   date: `${y + 1}/${1}/${date}`  };  } else {  _m[i] = {   isCurMonth: false,   dateNum: date,   weekIndex,   date: `${y}/${m + 2}/${date}`  };  } } else {  let _date = i - firstDay + 1;  let today = new Date();  let today_y = today.getFullYear();  let today_m = today.getMonth();  let today_d = today.getDate();  let isToday = today_y === y && today_m === m && today_d === _date ? true : false;  _m[i] = {  dateNum: _date, //日期  day: i % 7, //周期  weekIndex,  isCurMonth: true,  isToday,  date: `${y}/${m + 1}/${_date}`  }; } } return _m;}

/** * [getOneDateWeekIndex 獲得指定的某天所在該月的第幾周，下標從0開始] * @param {[Date]} date [指定的日期，非必填，默認為當天] * @return {[Int]} [在該月的第幾周] */export function getOneDateWeekIndex(date) { date = date ? date : new Date(); let monthDays = getCalendarMonth(date); let dateString = getFormatDateStr(date, '/', true, false, false); let returnDate = monthDays.filter(item => { return item.date === dateString; }); let weekIndex = returnDate[0].weekIndex; return weekIndex ? weekIndex : 0;}