从JavaScript工作日获取下一个日期

时间:2009-10-16 16:16:46

标签: javascript datetime weekday

如何返回给定工作日的下一个日期(可能是0-6号或者周日至周六的名字)。

例如,如果今天,在 2009年10月16日星期五,我通过了:

  • 星期五,它将返回今天的日期 2009年10月16日
  • 星期六返回 2009年10月17日
  • 星期四返回 2009年10月22日

6 个答案:

答案 0 :(得分:28)

只添加7并不能解决问题。

以下功能将为您提供一周的第二天。

function nextDay(x){
    var now = new Date();    
    now.setDate(now.getDate() + (x+(7-now.getDay())) % 7);
    return now;
}

答案 1 :(得分:16)

这里有一个稍微修改过的版本,以回答蒂姆的答案,以解决具体问题 - 在日期d中传递,并且,在一周中所需的一天(道具0-6),返回日期< / p>

function nextDay(d, dow){
    d.setDate(d.getDate() + (dow+(7-d.getDay())) % 7);
    return d;
}

答案 2 :(得分:3)

要展开user 190106answer,此代码可以为您提供所需内容:

function getNextDay(day, resetTime){
  var days = {
    sunday: 0, monday: 1, tuesday: 2,
    wednesday: 3, thursday: 4, friday: 5, saturday: 6
  };

  var dayIndex = days[day.toLowerCase()];
  if (dayIndex !== undefined) {
    throw new Error('"' + day + '" is not a valid input.');
  }

  var returnDate = new Date();
  var returnDay = returnDate.getDay();
  if (dayIndex !== returnDay) {
    returnDate.setDate(returnDate.getDate() + (dayIndex + (7 - returnDay)) % 7);
  }

  if (resetTime) {
    returnDate.setHours(0);
    returnDate.setMinutes(0);
    returnDate.setSeconds(0);
    returnDate.setMilliseconds(0);
  }
  return returnDate;
}

alert(getNextDay('thursday', true));

答案 3 :(得分:3)

这是另一个简单的解决方案

&#13;
&#13;
//takes dayIndex from sunday(0) to saturday(6)
function nextDate(dayIndex) {
    var today = new Date();
    today.setDate(today.getDate() + (dayIndex - 1 - today.getDay() + 7) % 7 + 1);
    return today;
}
document.write("Next Sunday is: "+nextDate(0).toLocaleString()+"<br/>");
document.write("Next Thursday is: "+nextDate(4).toLocaleString()+"<br/>");
document.write("Next Saturday is: "+nextDate(6).toLocaleString());
&#13;
&#13;
&#13;

答案 4 :(得分:1)

如果您不想传递号码,但工作日名称(星期日 - 星期六)要找到某个工作日的未来日期,那么这也有助于您:

function getDateOfWeekday(refday){
    var days = {
        monday: 1,
        tuesday: 2,
        wednesday: 3,
        thursday: 4,
        friday: 5,
        saturday: 6,
        sunday: 0
    };
    if(!days.hasOwnProperty(refday))throw new Error(refday+" is not listed in "+JSON.stringify(days));
    var currDate = new Date();
    var currTimestamp = currDate.getTime();
    var triggerDay = days[refday];
    var dayMillDiff=0;
    var dayInMill = 1000*60*60*24;
    // add a day to dayMillDiff as long as the desired refday (sunday for instance) is not reached
    while(currDate.getDay()!=triggerDay){
        dayMillDiff += dayInMill;
        currDate = new Date(currDate.getTime()+dayInMill);
    }
    return new Date(currTimestamp + dayMillDiff);
}

var sunday = getDateOfWeekday("sunday");
document.write("Next Sunday is at: <strong>"+sunday.toLocaleString()+"</strong><br/>");

var thursday = getDateOfWeekday("thursday");
thursday.setHours(0,0,0,0); // set hours/minutes/seconds and millseconds to zero
document.write("Next Thursday is at: <strong>"+thursday.toLocaleString()+"</strong> on midnight<br/>");

var tuesday = getDateOfWeekday("tuesday");
document.write("Next Tuesday is at: <strong>"+tuesday.toLocaleString()+"</strong><br/>");

答案 5 :(得分:0)