javascript 如何通过在javascript中给出天数来增加日期
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how to increment date by giving the number of days in javascript
提问by Bader
I want to increment dates using JavaScript I used .setDate(1)to increment dates by one day
but if the date is 31/11/2011after increment becomes 1/0/2012,
我想使用 JavaScript 增加日期我曾经.setDate(1)将日期增加一天，但如果日期31/11/2011在增加之后变为1/0/2012，
the question is how to increment date by giving the number of days .
问题是如何通过给出天数来增加日期。
js
js
newDate.setDate(newDate.getDate()+1);
alert(newDate.getFullYear()+"-"+newDate.getMonth()+"-"+newDate.getDate());
回答by Dogbert
That is correct, because in javascript, months are indexed from 0, not 1.
这是正确的，因为在 javascript 中，月份是从 0 开始索引的，而不是 1。
You need to alert like this instead:
你需要像这样提醒：
alert(newDate.getFullYear()+"-"+(newDate.getMonth()+1)+"-"+newDate.getDate());
回答by Ioannis Karadimas
That is not wrong, given that months in Javascript dates range from 0 to 11. So when you speak of 31/11/2011, what javascript understands is 31/12/2011.
这并没有错，因为 Javascript 中的月份日期范围从 0 到 11。所以当你谈到 时31/11/2011，javascript 理解的是31/12/2011.
回答by AlphaMale
Lets make it some more clear:
让我们说得更清楚一些：
var Date = new Date();
var DaysToAdd = 6;
someDate.setDate(Date.getDate() + DaysToAdd);
Formatting Date to dd/mm/yyyy format:
将日期格式化为 dd/mm/yyyy 格式：
var dd = Date.getDate();
var mm = Date.getMonth() + 1;
var yyyy = Date.getFullYear();
var NewDate = dd + '/'+ mm + '/'+ yyyy;
Hope this helps.
希望这可以帮助。
回答by Stuti
You can use like this, Suppose you want to increment current date by 2 days then,
您可以这样使用，假设您想将当前日期增加 2 天，然后，
var today = new Date(); // Or Date.today()
var newDate = today.add(2).day();
