What does the i--> opeator do in JavaScript?

Question

So I took a look at the code that controls the counter on the SO advertising page. Then I saw the line where this occured i-->. What does this do?

He

Answer 1

Thought of the exact same thread that JCasso thought of. What is the "-->" operator in C++?

I think this code style stems from the early days of programming when terminals had limited display real estate.