Question

I’m storing a date in a global variable called MyDate. If I write this:

var TheDate = MyDate;

for (var i = 5; i > 0; i--) {
   TheDate = TheDate - i;
}

Am I just changing TheDate or am I also changing MyDate?

Thanks.

Answer 1

It will only change TheDate.

see this fiddle link

This is because when you do TheDate = TheDate - i TheDate is no more treated as Date object but instead is long.