How to get week number in variable

Hi Ayoub,

I'm not sure which threads you've already looked through, but here is one with some sample code to pull the date/time into your course. You'll likely need to modify it to include the week number and you may want to reach out in that thread for assistance. 

I did a quick test using this code and a Storyline variable "MyWeekNumber", that worked for me.

"

Date.prototype.getWeek = function() {
 var onejan = new Date(this.getFullYear(),0,1);
 return Math.ceil((((this - onejan) / 86400000) + onejan.getDay()+1)/7);
 }

var today = new Date();
 var weekno = today.getWeek();

var player = GetPlayer();
 player.SetVar("MyWeekNumber",weekno);

"

HI, i too am looking for a piece of java script to pull the 'week of year' in from a calendar, i tried the code above but it didnt seem to work, (it said week 10 instead of week 9) for 29th feb, possibly as 1st jan this year is week 53 of 2015, Is anyone aware of some code that takes this into account?

many thanks

Derek

Hi, Derek -- Thanks for reaching out here! I just thought I should stop in to note that unfortunately, we are not able to provide support for use of JavaScript. Luckily, we have lots of community members who are usually more than willing to share their expertise to assist!

And in case you'd like to check it out, here is a sheet on JavaScript Best Practices you may want to keep handy. :)

Hi Derek, 

I use this code to get the week number:

var player = GetPlayer();
var weekNumber = Math.ceil(((((new Date()-new Date(new Date().getFullYear(),0,1))/8.64e7)+4)/7)-1);
player.SetVar("rWeekNumber", weekNumber);

rWeekNumber is the Storyline variable I use, change it to whatever you use.

Change the +4  to tweak whatever day you use as first day of the week. 

Use the -1 to correct the week number as needed: some years start with week 53. 

You'll need to update/correct this code every year. I think this is set right for 2016, with weeks starting on Monday. The week number may be off by 1. For my purpuses it didn't matter, all I wanted to do is show a certain page according to the returned value, I never display the variable.

Bonus tip to test your tweaking: output to html, and change your computer's system date back and forth to see if the correct week number is calculated (don't forget to change it back, I had people wondering how I was emailing them from the future).

Good luck! 

Cheers, Ayoub

brilliant, i can make this work!!

thanks so much for taking the time!