获取当前周的开始日期和结束日期(周从星期一开始，以星期日结束)

<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>

可以使用下面的函数:

// 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'));

试试这个:

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));

在其他示例中，如果星期日落在其他月份，您将遇到问题。这应该可以解决这个问题:

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);

SetDate将设置月份的日期。在月初和月末使用setDate，会导致错误的周

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- july -2014，则第一天显示为29- june -2014， 最后一天显示为05- june -2014，而不是05-07-2014 。为了解决这个问题，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

根据RobG的回答，我最终得到了这样的一周开始于周一午夜，结束于周日23:59:59.999。

  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];
  }

稍微修改了@ReadWriteCode的答案，这在不同的月份也能成功。

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();

使用https://momentjs.com使它更简单。

1. 要得到周以星期日开始，以星期六结束，然后使用:moment().startOf("week").toDate()和时刻().endOf("周").toDate ()

2. 要得到周从星期一开始以星期日结束，然后使用:moment().startOf("isoWeek").toDate()和moment().endOf("isoWeek").toDate()

在moment v2.18.1上尝试了这个，它可以工作。

希望这对你有帮助，更多信息可以参考moment docs

您可以修改返回值以满足您的需要，现在它只返回Sunday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());

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。

1. 不同月份的问题也通过下面的代码修复。

2. 增加了格式"M.dd。yyyy"功能。

   函数startAndEndOfWeek(设置当前日期)｛Var day = null;Var日期=空;Var月=空;Var年=空;Var mon = null;Var true = null;Var wed = null;Var thu = null;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];
   

   }

   函数getMonthValue(月)｛开关(月)｛情况0:返回"Jan";打破;情况1:返回"Feb";打破;情况2:返回"Mar";打破;情况3:返回"Apr";打破;情况4:返回"May";打破;情况5:返回"君";打破;情况6:返回"Jul";打破;情况7:返回"Aug";打破;案例8:返回"Sep";打破;情况9:返回"Oct";打破;情况10:返回"Nov";打破;情况11:返回"Dec";打破;}}函数getDateValue(天)｛如果(方法& lt(天);10）｛返回"0" +日;}返回一天;}

如本链接

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());

纯香草JS。没有第三方库。返回星期日到星期日上午00点。

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)

检查从周一开始到周日的周数

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));