wft-utils/util/date.js

The commonly used tool functions in daily development

/**
 * 获取 num 天前日期
 * @param {*} num 
 * @returns 
 */
export function getDate(num) {
  var date1 = new Date();
  var date2 = new Date(date1);
  date2.setDate(date1.getDate() + num);
  //num是正数表示之后的时间，num负数表示之前的时间，0表示今天
  var time2 = addZero(date2.getFullYear()) + "-" + addZero((date2.getMonth() + 1)) + "-" + addZero(date2.getDate());
  return time2;
}
function addZero(num) {//补0方法
  if (parseInt(num) < 10) {
    num = '0' + num;
  }
  return num;
}

/**
 * 获取当前月份第一天
 * @returns 
 */
export function getCurrentMonthFirst() {
  var date = new Date();
  date.setDate(1);
  var month = parseInt(date.getMonth() + 1);
  var day = date.getDate();
  if (month < 10) {
    month = '0' + month
  }
  if (day < 10) {
    day = '0' + day
  }
  return date.getFullYear() + '-' + month + '-' + day;
}

/**
 * 获取当前月份最后一天
 * @returns 
 */
export function getCurrentMonthLast() {
  var date = new Date();
  var currentMonth = date.getMonth();
  var nextMonth = ++currentMonth;
  var nextMonthFirstDay = new Date(date.getFullYear(), nextMonth, 1);
  var oneDay = 1000 * 60 * 60 * 24;
  var lastTime = new Date(nextMonthFirstDay - oneDay);
  var month = parseInt(lastTime.getMonth() + 1);
  var day = lastTime.getDate();
  if (month < 10) {
    month = '0' + month
  }
  if (day < 10) {
    day = '0' + day
  }
  return date.getFullYear() + '-' + month + '-' + day;
}

/**
 * 获取当前周的第一天和最后一天
 * @returns 
 */
export function getCurrWeek() {
  var d = new Date();

  //获取周一
  var beginWhereTheTime = GetMondayAndSunday(d);
  var dd = new Date(beginWhereTheTime);
  //获取周天
  dd.setDate(dd.getDate() + 6);
  var monthSunday = parseInt(dd.getMonth()) + 1;
  var endWhereTheTime = dd.getFullYear() + "-" + formatDate(monthSunday) + "-" + formatDate(dd.getDate());

  return {
    Monday: beginWhereTheTime,
    Sunday: endWhereTheTime
  }
}
//获取指定日期所在周周一
function GetMondayAndSunday(dd) {
  var week = dd.getDay(); //获取时间的星期数
  var minus = week ? week - 1 : 6;
  dd.setDate(dd.getDate() - minus); //获取minus天前的日期
  var y = dd.getFullYear();
  var m = dd.getMonth() + 1; //获取月份
  var d = dd.getDate();
  return y + "-" + formatDate(m) + "-" + formatDate(d);
}
//格式化月和日为MM、dd
function formatDate(value) {
  if (value < 10) {
    value = "0" + value;
  }
  return value;
}

/**
 * 获取某天日期（yyyy-MM-dd）为周几
 * @param {*} date 
 * @returns 
 */
export function getWeek(date) {
  var weekArray = new Array("周日", "周一", "周二", "周三", "周四", "周五", "周六");
  var week = weekArray[new Date(date).getDay()];
  return week;
}

/**
 * 获取当前时间
 * @returns 
 */
export function getCurrTime() {
  return {
    currTime: new Date().toLocaleTimeString('chinese', { hour12: false }),
    currTimeStamp: new Date().getTime()
  }
}

/**
 * 标准时间转为时间戳
 * @param {*} dateTime 
 * @returns 
 */
export function dateTimeToStamp(dateTime) {
  return Date.parse(new Date(dateTime))
}

/**
 * 时间戳转为标准时间
 * @param {*} timeStamp 
 * @returns 
 */
export function timeStampTodateTime(timeStamp) { //timeStamp：毫秒格式，即13位   如果是秒就 *1000
  let s = new Date(timeStamp)
  let y = s.getFullYear()
  let m = (s.getMonth() + 1) < 10 ? '0' + (s.getMonth() + 1) : (s.getMonth() + 1)
  let dd = s.getDate() < 10 ? '0' + s.getDate() : s.getDate()
  let hh = s.getHours() < 10 ? '0' + s.getHours() : s.getHours()
  let mm = s.getMinutes() < 10 ? '0' + s.getMinutes() : s.getMinutes()
  let ss = s.getSeconds() < 10 ? '0' + s.getSeconds() : s.getSeconds()
  let enddate = y + '-' + m + '-' + dd + ' ' + hh + ':' + mm + ":" + ss
  return enddate
}

/**
 * 将Tue Mar 08 2022 16:43:57 GMT+0800 (中国标准时间)转为标准时间格式(yyyy-MM-dd HH:mm:ss) 
 * @param {*} value 
 * @returns 
 */
export function dateFormat(value) {
  var date = new Date(value);
  var YY = date.getFullYear() + '-';
  var MM = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1) + '-';
  var DD = date.getDate() < 10 ? '0' + date.getDate() : date.getDate();
  var hh = (date.getHours() < 10 ? '0' + date.getHours() : date.getHours()) + ':';
  var mm = (date.getMinutes() < 10 ? '0' + date.getMinutes() : date.getMinutes()) + ':';
  var ss = date.getSeconds() < 10 ? '0' + date.getSeconds() : date.getSeconds();
  return YY + MM + DD + ' ' + hh + mm + ss;
}

/**
 * 获取num月前的某天
 * @param {*} num 
 * @param {*} day 
 * @returns 
 */
export function getMonthDate(num = 0, day = '01') {
  if(Number(day) < 10) day = '0' + Number(day)
  let targetDate = new Date()
  targetDate.setMonth(targetDate.getMonth() + num)
  let [ date, time ] = dateFormat(targetDate).split(' ')
  return date.split('-').slice(0, 2).join('-') + '-' + day
}

/**
 * 秒数 转为 xx时xx分xx秒
 * @param {string | number} value 
 * @returns 
 */
export function formatSecondsToHour(value) {
  let theTime = parseInt(value);// 秒
  let middle = 0;// 分
  let hour = 0;// 小时
  if (theTime > 60) {
    middle = parseInt(theTime / 60);
    theTime = parseInt(theTime % 60);
    if (middle > 60) {
      hour = parseInt(middle / 60);
      middle = parseInt(middle % 60);
    }
  }
  let secondTime = parseInt(theTime) >= 10 ? parseInt(theTime) : '0' + parseInt(theTime)
  let result = "" + secondTime + "秒";
  if (middle > 0) {
    let minuteTime = parseInt(middle) >= 10 ? parseInt(middle) : '0' + parseInt(middle)
    result = "" + minuteTime + "分" + result;
  }
  if (hour > 0) {
    result = "" + parseInt(hour) + "小时" + result;
  }
  return result;
}

/**
 * 秒数 转为 xx天xx时xx分xx秒
 * @param {string | number} value 
 * @returns 
 */
export function formatSecondsToDay(value) {
  let secondTime = parseInt(value) // 秒
  let minuteTime = 0 // 分
  let hourTime = 0 // 小时
  let dayTime = 0 // 天
  let result = ''
  if (value < 60) {
    result = secondTime + '秒'
  } else {
    if (secondTime >= 60) { // 如果秒数大于60，将秒数转换成整数
      // 获取分钟，除以60取整数，得到整数分钟
      minuteTime = parseInt(secondTime / 60)
      // 获取秒数，秒数取佘，得到整数秒数
      secondTime = parseInt(secondTime % 60)
      // 如果分钟大于60，将分钟转换成小时
      if (minuteTime >= 60) {
        // 获取小时，获取分钟除以60，得到整数小时
        hourTime = parseInt(minuteTime / 60)
        // 获取小时后取佘的分，获取分钟除以60取佘的分
        minuteTime = parseInt(minuteTime % 60)
        if (hourTime >= 24) {
          // 获取天数， 获取小时除以24，得到整数天
          dayTime = parseInt(hourTime / 24)
          // 获取小时后取余小时，获取分钟除以24取余的分；
          hourTime = parseInt(hourTime % 24)
        }
      }
    }
    if (secondTime > 0) {
      secondTime = parseInt(secondTime) >= 10 ? secondTime : '0' + secondTime
      result = '' + secondTime + '秒'
    }
    if (minuteTime > 0) {
      minuteTime = parseInt(minuteTime) >= 10 ? minuteTime : '0' + minuteTime
      result = '' + minuteTime + '分' + result
    }
    if (hourTime > 0) {
      result = '' + parseInt(hourTime) + '小时' + result
    }
    if (dayTime > 0) {
      result = '' + parseInt(dayTime) + '天' + result
    }
  }
  return result
}