Calculating two weeks forward form a day, using a marker day

Question

I am trying to code the date of the Thursday which falls two weeks after a given date. It is more complex than just adding 14 days to a given date.

This is because if the first Wednesday after a given date week is the start date, two weeks after it, counting by Thursdays, is more then 14 days where the Thursday of week in which the date was declared is skipped.

I am thinking that it should be a JavaScript function that uses

// variable will hold the current date var today = new Date();

// variable will hold the number of the day (e.g. Wednesday = 3). var thisDay = today.getDay();

and then I will place it into the "thisDate" variable in an if statement.

Just to be clear, I am trying to use this code in a manner where the starting date is a variable which is given. I then calculate the 2 weeks after, skipping the week which the date was declared.

Answer 1

using moment.js you can do it this way:

moment().add(2, 'weeks').startOf('isoweek').add(3, 'days');

demo http://jsfiddle.net/n20vncp0/