+=

[6arredja]

What does the += mean in this code?

begin += NameOfCookie.length+1;

[Serex]

+= will add the value of NameOfCookie.length + 1 back into the value of begin.

think of it like this

begin = 0;
begin += 2; // begin now = 2
begin += 5; // begin now = 7

its basically saying
begin = begin + 2;
begin = begin + 5;

so in your case
begin = begin + ( NameOfCookie.length + 1 );
begin += NameOfCookie.length + 1; // same

[6arredja]

Thanks a bundle