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JS gets the maximum number of days in a month and the last day to get the month

Source: Internet
Author: User
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The code is as follows:
<title> title page </title>
<script language=javascript>
function Getlastday (year,month)
{
var new_year = year; Take the current year
var new_month = month++;//removed one month first day, convenient calculation (last day not fixed)
if (month>12)//If the current is greater than December, the year goes to the next year
{
New_month-=12; Month minus
new_year++; Year increases
}
var new_date = new Date (new_year,new_month,1); Take the first day of the current month
Return (new Date (New_date.gettime () -1000*60*60*24)). GETDATE ();//Gets the date of the last day of the month
}
</script>
<body>
<input Id=button1 Type=button value= Take the last day of May 2007 Onclick=alert (Getlastday (2007,5))/>
</body>



JS to one month maximum number of days

JS inside the new date (XXXX/XX/XX) This dates to construct method has a beauty,

When you pass in the ground is xxxx/xx/0 (No. 0), the date of the land is xx month before the last day of one months (the maximum value of XX month is 69, off-topic),

When you pass in the ground is XXXX/XX/1 (1th), the date of the land is xx months after the first day of one months (self understanding)

If passed in 1999/13/0, will be to 1998/12/31. And the biggest advantage is that when you pass into the xxxx/3/0, will be the last day of XXXX year February, it will automatically determine whether it is a leap year to return 28 or 29, without their own judgment,

So, we want to choose the year to select the number of heaven and earth words, only need

var temp=new date (Select year/select Month +1/0);

return temp.getdate ()//Maximum days

Check the ground, you can also use this method.

Here is how to use JS to get the number of getdaysinmonth (year, Month) method for a certain month:

The code is as follows:
function Getdaysinmonth (year,month) {
month = parseint (month,10) +1;
var temp = new Date (year+/+month+/0);
return Temp.getdate ();
}

JS gets the maximum number of days in a month and the last day to get the month

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Related Keywords:
javascript get number of days in month number of days in month php last day of month wordpress the field number of days in each month average number of days in month number of days in every month

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