JS date plus minus (days), time plus minus, date arithmetic, can be called directly

Source: Internet
Author: User

Add and subtract based on the date passed in, integer is addition, negative number is subtraction, but day.

Num can be passed in: 1,2,3,-1,-2,-3, and so on, the default is to add a day; date can be passed in: 2017-01-01 format, the default is the day date.

function datechange (num = 1,date = False) {
if (!date) {
Date = new Date ()///The current date is the default when no value is passed in
Date = Date.getfullyear () + '-' + (Date.getmonth () + 1) + '-' + date.getdate ();
}
Date + = "00:00:00";//Set to 12 o'clock in the morning today
Date = Date.parse (new date)/1000;//converted to timestamp
Date + = (86400) * num;//modified timestamp
var newdate = new Date (parseint (Date) * 1000);//Convert to TIME
return newdate.getfullyear () + '-' + (Newdate.getmonth () + 1) + '-' + newdate.getdate ();
}

Call Result:

1, Datechange ();

Results:

    

2, Datechange (30);

Results:

    

3, Datechange (-10);

Results:

    

4, Datechange (3, ' 2018-02-27 ');

Results:

    

5, Datechange (-2, ' 2016-3-1 ');

Results:

    

JS date plus minus (days), time plus minus, date arithmetic, can be called directly

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.