Javascript 获取本周的开始日期和结束日期（一周从星期一开始，以星期日结束）

Get start date and end date of current week (week start from monday and end with sunday )

提问by Vishnu

I want to display start date and end date of current week. (week start=monday, week end=sunday) I manage to display monday.

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。

But I'm unable to get sunday date. Please post me if anyone has solution.

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。

回答by ReadWriteCode

<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>

I believe this works.

我相信这有效。

回答by RobG

The following function will do the trick:

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'));

回答by Rawat Raman

Try this:

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));

回答by Orchid

SetDatewill sets the day of the month. Using setDateduring start and end of the month, will result in wrong week

SetDate将设置月份中的日期。setDate在月初和月底使用，将导致错误的一周

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

If setting Date is 01-Jul-2014, it will show firstday as 29-Jun-2014 and lastday as 05-Jun-2014 instead of 05-Jul-2014. So to overcome this issue I used

如果设置 Date 为 01-Jul-2014，则将第一天显示为 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

回答by Lars de Weert

In the other examples you will have a problem when sunday falls in other month. This should solve the problem:

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);

回答by jo2

Based on RobG's answer, I ended up with this to get week to start on midnight Monday and end on Sunday 23:59:59.999.

根据 RobG 的回答，我最终得到了这一周，从星期一午夜开始，到星期日 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];
  }

回答by Rajat Sawant

Slightly Modified answer of @ReadWriteCode, this also works successfully with different months.

@ReadWriteCode 的稍微修改的答案，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();

回答by Thanmai C

Using https://momentjs.commakes it more simple.

使用https://momentjs.com使其更简单。

1. To get week starting with Sunday and ending with Saturday, then use: moment().startOf("week").toDate() and moment().endOf("week").toDate()

2. To get week starting with Monday and ending with Sunday, then use: moment().startOf("isoWeek").toDate() and moment().endOf("isoWeek").toDate()

1. 要获得从 Sunday 开始并以 Friday 结束的周，请使用： moment().startOf("week").toDate() 和 moment().endOf("week").toDate()

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

Tried this on moment v2.18.1, it works.

在moment v2.18.1 上试过这个，它有效。

Hope this helps, for more you can refer moment docs.

希望这会有所帮助，有关更多信息，您可以参考 moment 文档。

回答by Hamed Zakery Miab

as in this link

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());

回答by Shivam Chopra

I hope this will work for you :

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));
}

These method will return start date and end date of the week.

这些方法将返回一周的开始日期和结束日期。