--- id: 5dbfeffe7736e5ee7d235549 title: Part 148 challengeType: 0 dashedName: part-148 --- # --description-- The `indexOf()` array method returns the first index at which a given element can be found in the array, or -1 if it is not present. After the for loop, add an `if` expression to check if the guessed number is in the `numbers` array. The condition of the `if` expression should check if `numbers.indexOf(guess) !== -1`. # --hints-- See description above for instructions. ```js assert( pick .toString() .replace(/\s/g, '') .includes('if(numbers.indexOf(guess)!==-1){}') ); ``` # --seed-- ## --before-user-code-- ```html