Moneyline betting is where you pick the winner of an event or game. Negative odds indicate favorites, and underdogs have positive odds. The range between the odds can indicate the closeness of the matchup in the eyes of the sportsbook.
The moneyline when placing a wager on a favorite tells you how much money you would be required to wager in order to return aR$100 profit on your bet. In the case of the Sharks (-230) is telling us that it would be necessary for you to betR$230 on San Jose if you desired to make aR$100 return from your wager.