javascript 用javascript检索一年的最后一天
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Retrieve the last day of the year in javascript
提问by josh3736
Today it's 06/11/2012. I need retrieve the last day of the current year using javascript.
今天是 06/11/2012。我需要使用 javascript 检索当年的最后一天。
function getLastDayOfYear(date)
{
var x = document.getElementById("demo");
var year = date.getFullYear();
var month = date.getMonth();
var day = 0; // ?????
x.innerHTML = day + "-" + month + "-" + year;
}
Is there any function that retrieve it done, or must i do a full implementation? If i need to implement this, could anyone help me out ?
是否有任何功能可以检索它完成，或者我必须做一个完整的实现？如果我需要实现这一点，有人可以帮我吗？
I made a simple fiddle you can check here: http://jsfiddle.net/EyzCD/
我做了一个简单的小提琴，你可以在这里查看：http: //jsfiddle.net/EyzCD/
回答by josh3736
Since the last day of a year is always December 31, it's easy:
由于一年的最后一天总是 12 月 31 日，所以很简单：
new Date(new Date().getFullYear(), 11, 31)
回答by Mayerson
In case that someday the last day of the year changes, could be useful to use a temporary date with the first day on the next month and then return to the previous date
如果某天一年的最后一天发生变化，使用临时日期和下个月的第一天然后返回到上一个日期可能会很有用
tmp_date = new Date(2012, 12, 1)
last_day = new Date(tmp_date - 1)
回答by Rikki
alert(new Date(2012, 12, 0));
will return
将返回
Mon Dec 31 00:00:00 CST 20102
回答by Magnus Karlsson
Will this do it for you? This will return the Whole lot for you to pick from.
这会为你做吗？这将返回整批供您选择。
function LastDayOfMonth(Year, Month) {
return new Date( (new Date(Year, Month,1))-1 );
}
回答by Remco Ros
I think OP wants to get last day of the month.
我认为 OP 想要获得本月的最后一天。
try:
尝试：
var tmp = new Date(year, month+1, 1);
var days = new Date(tmp-1).getDate();
回答by Abdul Qadir Memon
This will return Last day of Year
这将返回一年中的最后一天
var actualDate = new Date()
var eoYear = new Date(actualDate.getFullYear(),12,0)
In case if you need to return Last second of the year
如果您需要返回今年的最后一秒
var actualDate = new Date()
var eoYear = new Date(actualDate.getFullYear(),12,0,23,59,59)
