Answer 1

The variable for the computer's choice is rand, not computer.

Answer 2

In lines 9 and 12 replace all occurrences of "computer" with "rand".

Answer 3

And in line 9 you should use parentheses to group the conditions.

Answer 4

if((user === "rock" && rand === "scissors") || (user === "paper" && rand === "rock") || (user === "scissors" && rand === "paper"))