StackRating

An Elo-based rating system for Stack Overflow
Home   |   About   |   Stats and Analysis   |   Get a Badge
Answers and rating deltas for

Why JavaScript shows "undefined" alert in the 1st line of of r() in the below snippet?

Author Votes Δ
eeahktzugr 1 +4.00
Dizip 0 -4.00
Last visited: Aug 9, 2018, 9:00:57 PM