获取本周的开始日期和结束日期（每周从星期一开始，以星期日结束）

Question

我想显示本周的开始日期和结束日期。 (week start=monday, week end=sunday) 我设法显示星期一。

但我无法得到星期天的约会。 如果有人有解决方案，请张贴我。

Answer 1

<script>
Date.prototype.getWeek = function(start)
{
        //Calcing the starting point
    start = start || 0;
    var today = new Date(this.setHours(0, 0, 0, 0));
    var day = today.getDay() - start;
    var date = today.getDate() - day;

        // Grabbing Start/End Dates
    var StartDate = new Date(today.setDate(date));
    var EndDate = new Date(today.setDate(date + 6));
    return [StartDate, EndDate];
}

// test code
var Dates = new Date().getWeek();
alert(Dates[0].toLocaleDateString() + ' to '+ Dates[1].toLocaleDateString())
</script>

我相信这有效。

Answer 2

以下函数可以解决问题：

// return an array of date objects for start (monday)
// and end (sunday) of week based on supplied 
// date object or current date
function startAndEndOfWeek(date) {

  // If no date object supplied, use current date
  // Copy date so don't modify supplied date
  var now = date? new Date(date) : new Date();

  // set time to some convenient value
  now.setHours(0,0,0,0);

  // Get the previous Monday
  var monday = new Date(now);
  monday.setDate(monday.getDate() - monday.getDay() + 1);

  // Get next Sunday
  var sunday = new Date(now);
  sunday.setDate(sunday.getDate() - sunday.getDay() + 7);

  // Return array of date objects
  return [monday, sunday];
}

// Mon Nov 12 2012 00:00:00
// Sun Nov 18 2012 00:00:00
alert(startAndEndOfWeek(new Date(2012,10,14)).join('\n'));

Answer 3

尝试这个：

var current = new Date();     // get current date    
var weekstart = current.getDate() - current.getDay() +1;    
var weekend = weekstart + 6;       // end day is the first day + 6 
var monday = new Date(current.setDate(weekstart));  
var sunday = new Date(current.setDate(weekend));

Answer 4

SetDate将设置一个月中的哪一天。 在月初和月底使用setDate会导致错误的一周

var curr = new Date("08-Jul-2014"); // get current date
var first = curr.getDate() - curr.getDay(); // First day is the day of the month - the day of the week
var last = first + 6; // last day is the first day + 6
var firstday = new Date(curr.setDate(first)); // 06-Jul-2014
var lastday = new Date(firstday .setDate(last)); // 12-Jul-2014

如果设置 Date 为 01-Jul-2014，它将显示第一天为 29-Jun-2014，最后一天显示为 05-Jun-2014 而不是 05-Jul-2014 。 所以为了克服这个问题，我使用了

var curr = new Date();
day = curr.getDay();
firstday = new Date(curr.getTime() - 60*60*24* day*1000); // will return firstday (i.e. Sunday) of the week
lastday = new Date(firstday.getTime() + 60 * 60 *24 * 6 * 1000); // adding (60*60*6*24*1000) means adding six days to the firstday which results in lastday (Saturday) of the week

Answer 5

在其他示例中，当星期日落在其他月份时，您会遇到问题。 这应该可以解决问题：

var today, todayNumber, mondayNumber, sundayNumber, monday, sunday;
    today = new Date();
    todayNumber = today.getDay();
    mondayNumber = 1 - todayNumber;
    sundayNumber = 7 - todayNumber;
    monday = new Date(today.getFullYear(), today.getMonth(), today.getDate()+mondayNumber);
    sunday = new Date(today.getFullYear(), today.getMonth(), today.getDate()+sundayNumber);

Answer 6

根据 RobG 的回答，我最终得到了这一周，从周一午夜开始，到周日 23:59:59.999 结束。

  var weekMap = [6, 0, 1, 2, 3, 4, 5];

  function startAndEndOfWeek(date) {
    var now = new Date(date);
    now.setHours(0, 0, 0, 0);
    var monday = new Date(now);
    monday.setDate(monday.getDate() - weekMap[monday.getDay()]);
    var sunday = new Date(now);
    sunday.setDate(sunday.getDate() - weekMap[sunday.getDay()] + 6);
    sunday.setHours(23, 59, 59, 999);
    return [monday, sunday];
  }

Answer 7

@ReadWriteCode 稍作修改的答案，这也适用于不同的月份。

Date.prototype.getWeek = function()
{
    var today = new Date();
    var day = today.getDay();
    var date = today.getDate() - day;

        // Grabbing Start/End Dates
    var StartDate = new Date();
    var EndDate = new Date();
    StartDate.setHours(0,0,0,0); EndDate.setHours(0,0,0,0);
    StartDate.setDate(today.getDate()-day);
    EndDate.setDate(today.getDate()-day+6);
    return {
        startDate:StartDate,
        endDate: EndDate
    };
} 
var thisWeekDates=new Date().getWeek();

Answer 8

使用https://momentjs.com使其更简单。

1. 要从星期日开始到星期六结束，请使用： moment().startOf("week").toDate() 和 moment().endOf("week").toDate()

2. 要获得从 Monday 开始到 Sunday 的一周，然后使用： moment().startOf("isoWeek").toDate() 和 moment().endOf("isoWeek").toDate()

在moment v2.18.1 上试过这个，它有效。

希望这会有所帮助，有关更多信息，您可以参考 moment 文档。

Answer 9

我希望这对你有用：

Date.prototype.getWeekEndDate = function () {
    diff = 6 - this.getDay();
    if (diff < 0) {
        diff += 6;
    }
    this.setDate(this.getDate() + (1 * diff));
    return this;
}
Date.prototype.getWeekStartDate = function () {
    diff = this.getDay() - 6;
    if (diff < 0) {
        diff += 7;
    }
    return this.setDate(this.getDate() + (-1 * diff));
}

这些方法将返回一周的开始日期和结束日期。

Answer 10

1. 下面的代码也修复了不同月份的问题。

2. 添加格式“M.dd.yyyy”功能。

   函数 startAndEndOfWeek(setDate) { var day = null; var date = null;var month = null;var year = null; var mon = null; var tue = null; var wed = null; var 周四 = 空; var fri = null; var sat = null; var sun = null;

    var now = setDate ? new Date(setDate) : new Date(); now.setHours(0,0,0,0); var monday = new Date(now); var tuesday = new Date(now); var wednesday = new Date(now); var thursday = new Date(now); var friday = new Date(now); var saturday = new Date(now); var sunday = new Date(now); if(new Date(now).getDay() == 0) { monday.setDate(monday.getDate() - 6); tuesday.setDate(tuesday.getDate() - 5); wednesday.setDate(wednesday.getDate() - 4); thursday.setDate(thursday.getDate() - 3); friday.setDate(friday.getDate() - 2); saturday.setDate(saturday.getDate() - 1); sunday.setDate(sunday.getDate() - 0); } else { monday.setDate(monday.getDate() - monday.getDay() + 1); tuesday.setDate(tuesday.getDate() - tuesday.getDay() + 2); wednesday.setDate(wednesday.getDate() - wednesday.getDay() + 3); thursday.setDate(thursday.getDate() - thursday.getDay() + 4); friday.setDate(friday.getDate() - friday.getDay() + 5); saturday.setDate(saturday.getDate() - saturday.getDay() + 6); sunday.setDate(sunday.getDate() - sunday.getDay() + 7); } date = monday.getDate(); month = monday.getMonth(); year = monday.getFullYear(); mon = getMonthValue(month) + "." + getDateValue(date) + "." + year; date = tuesday.getDate(); month = tuesday.getMonth(); year = tuesday.getFullYear(); tue = getMonthValue(month) + "." + getDateValue(date) + "." + year; date = wednesday.getDate(); month = wednesday.getMonth(); year = wednesday.getFullYear(); wed = getMonthValue(month) + "." + getDateValue(date) + "." + year; date = thursday.getDate(); month = thursday.getMonth(); year = thursday.getFullYear(); thu = getMonthValue(month) + "." + getDateValue(date) + "." + year; date = friday.getDate(); month = friday.getMonth(); year = friday.getFullYear(); fri = getMonthValue(month) + "." + getDateValue(date) + "." + year; date = saturday.getDate(); month = saturday.getMonth(); year = saturday.getFullYear(); sat = getMonthValue(month) + "." + getDateValue(date) + "." + year; date = sunday.getDate(); month = sunday.getMonth(); year = sunday.getFullYear(); sun = getMonthValue(month) + "." + getDateValue(date) + "." + year; return [mon, tue , wed, thu, fri, sat, sun];

   }

   function getMonthValue(month) { switch(month) { case 0: return "Jan"; 休息; 情况1：返回“二月”； 休息; 情况2：返回“Mar”； 休息; 情况3：返回“Apr”； 休息; 情况4：返回“May”； 休息; 案例5：返回“君”； 休息; 情况6：返回“Jul”； 休息; 情况7：返回“Aug”； 休息; 案例8：返回“Sep”； 休息; 案例9：返回“Oct”； 休息; 案例10：返回“Nov”； 休息; 案例11：返回“Dec”； 休息; } } function getDateValue(day) { if(parseInt(day) < 10) { return "0" + day; } 返回日； }

Answer 11

如在此链接中

function endOfWeek(date)
  {

    var lastday = date.getDate() - (date.getDay() - 1) + 6;
    return new Date(date.setDate(lastday));

  }

dt = new Date(); 

console.log(endOfWeek(dt).toString());

Answer 12

纯香草JS。 没有第三方库。 周日至周日 00am 返回。

const now = new Date()
const startOfWeek = new Date(now.getFullYear(), now.getMonth(), now.getDate() - now.getDay())
const endOfWeek = new Date(now.getFullYear(), now.getMonth(), startOfWeek.getDate() + 7)

Answer 13

检查从星期一到星期日开始的一周的代码片段

const curr = new Date(); // get current date
const currentWeekDay = curr.getDay();
const lessDays = currentWeekDay === 0 ? 6 : currentWeekDay - 1; // handle sunday to monday week start day
const wkStart = new Date(new Date(curr).setDate(curr.getDate() - lessDays));
const wkEnd = new Date(new Date(wkStart).setDate(wkStart.getDate() + 6));

Answer 14

您可以修改返回值以满足您的需要，现在它只返回周日的完整对象。

Date.prototype.endWeek=function(){
  return new Date(this.getFullYear(), this.getMonth(),(7-this.getDay())+this.getDate());
}

//call like this
var myDate = new Date(); 
var Sunday = myDate.endWeek();
alert("Sunday falls on "+ Sunday.getDate());