如何在javascript中检查日期是否在本周、本月或下个月内

how to check a date is within current week or current month or next month in javascript?

本文关键字：下个月 是否 javascript 检查 日期      更新时间：2023-09-26

我有一些朋友的生日，想把他们分开如下：

  • 本周内的生日（从当天开始的本周剩余天数内）
  • 当月内的生日（从当天开始的当月剩余天数内）
  • 下个月内的生日

因此，我只想知道如何在javascript中测试每个日期，看看它是否在本周/本月/下个月的剩余天数内。

N.B：比如说我有1990年6月29日的日期。

感谢

将日期和当前时间转换为Date对象并使用它进行比较。一些干式编码：

var now = new Date()
if (
   (check.getFullYear() == now.getFullYear()) &&
   (check.getMonth() == now.getMonth()) &&
   (check.getDate() >= now.getDate())
) {
   // remanining days in current month and today. Use > if you don't need today.
}
var nextMonth = now.getMonth() + 1
var nextYear = now.getFullYear()
if (nextMonth == 12) {
   nextMonth = 0
   nextYear++
}
if (
   (check.getFullYear() == nextYear) &&
   (check.getMonth() == nextMonth)
) {
   // any day in next month. Doesn't include current month remaining days.
}
var now = new Date()
now.setHours(12)
now.setMinutes(0)
now.setSeconds(0)
now.setMilliseconds(0)
var end_of_week = new Date(now.getTime() + (6 - now.getDay()) * 24*60*60*1000 )
end_of_week.setHours(23)
end_of_week.setMinutes(59)
end_of_week.setSeconds(59) // gee, bye-bye leap second
if ( check >=now && check <= end_of_week) {
   // between now and end of week
}

使用分析日期的代码是

var selecteddate = '07/29/1990';
var datestr = selecteddate.split('/');
var month = datestr[0];
var day = datestr[1]; 
var year = datestr[2];
var currentdate = new Date();
var cur_month = currentdate.getMonth() + 1;
var cur_day =currentdate.getDate();
var cur_year =currentdate.getFullYear();
if(cur_month==month && day >= cur_day)
{
 alert("in this month");
}
   else
   {
  alert("not in this month");
   }    ​
相关文章：