Tic-Tac-Toe Checker.js

/*
Description:
If we were to set up a Tic-Tac-Toe game, we would want to know whether the board's current state is solved, wouldn't we? Our goal is to create a function that will check that for us!

Assume that the board comes in the form of a 3x3 array, where the value is 0 if a spot is empty, 1 if it is an "X", or 2 if it is an "O", like so:

[[0, 0, 1],
 [0, 1, 2],
 [2, 1, 0]]
We want our function to return:

-1 if the board is not yet finished (there are empty spots),
1 if "X" won,
2 if "O" won,
0 if it's a cat's game (i.e. a draw).
You may assume that the board passed in is valid in the context of a game of Tic-Tac-Toe.
*/
function isSolved(board) {
   board = board.join('-').replace(/,/g,'');
   if(/222|2...2...2|2....2....2|2..2..2/.test(board)) return 2;
   if(/111|1...1...1|1....1....1|1..1..1/.test(board)) return 1;
   if(/0/.test(board)) return -1;
   return 0;
}