Return week start date (Monday) in Google Script

[Gilberto J. Colin]

hello, can someone please be a lifesaver and help me troubleshoot the below code?

for some reason, the code below returns Sunday instead of Monday week start date

 /* return start of the week (Monday) based on current date  */

  var curr = new Date();

  var first = (curr.getDate() - curr.getDay()) ;

  var Monday = Utilities.formatDate(new Date(curr.setDate(first)), "UTC", "YYYY-MM-dd");

  var sh = SpreadsheetApp.getActiveSheet();

  

 sh.getRange("A3").setValue(Monday) ;

  

};

[Clark Lind]

Hello, 

The Google "week" starts on Sunday: Sunday=0, Monday=1, Sat=6.

So I think the only modification would be to subtract 1 from the day:
var first = (curr.getDate() - (curr.getDay() - 1) ) ;