如何获得下周日期在JavaScript
问题描述:
有谁知道我怎样才能在此基础上本周日,下周日期?举例来说,如果我有这个周四日期(25/6/2009)我如何使用JavaScript来获取下周四日(2009/2/7)?如何获得下周日期在JavaScript
答
var firstDay = new Date("2009/06/25");
var nextWeek = new Date(firstDay.getTime() + 7 * 24 * 60 * 60 * 1000);
你也可以看看DateJS如果你喜欢 “流利” 的API。
答
Date.prototype.addDays = function (d) {
if (d) {
var t = this.getTime();
t = t + (d * 86400000);
this.setTime(t);
}
};
this_week.addDays(7);
答
function nextweek(){
var today = new Date();
var nextweek = new Date(today.getFullYear(), today.getMonth(), today.getDate()+7);
return nextweek;
}
答
函数dateObject.getNextWeekDay返回对象自己的日期后的下一个工作日。
Date.prototype.getNextWeekDay = function(d) {
if (d) {
var next = this;
next.setDate(this.getDate() - this.getDay() + 7 + d);
return next;
}
}
var now = new Date();
var nextMonday = now.getNextWeekDay(1); // 0 = Sunday, 1 = Monday, ...
var secondNextMonday = new Date(nextMonday).getNextWeekDay(1);
console.log('Next Monday : ' + nextMonday);
console.log('Second Next Monday : ' + secondNextMonday);
答
函数返回下一weekdaay:
function getNextWeekDay (startDate, dayOfWeek){
var dayOffset = dayOfWeek > startDate.getDay()
? dayOfWeek - startDate.getDay()
: dayOfWeek - startDate.getDay() + 7;
startDate.setDate(startDate.getDate() + dayOffset);
return startDate;
}
var now = new Date();
var nextMonday = getNextWeekDay(new Date(),1); // 0 = Sunday, 1 = Monday, ...
var nextSaturday = getNextWeekDay(new Date(),6);
var nextSunday = getNextWeekDay(new Date(),0);
var secondNextMonday = getNextWeekDay(new Date(now.getTime() + (7 *24 * 60 * 60 * 1000)),1);
alert(nextMonday+ '- '+nextSaturday+ '- '+nextSunday+ '- '+secondNextMonday);
我喜欢它...! +1 – Cerebrus 2009-06-22 06:29:46
虽然我会让日期原型独立。 – glmxndr 2009-06-22 06:30:46
为什么单独放置日期原型? – razzed 2009-06-22 06:35:18