1let shoppingList: string[] = [
2 'Eggs',
3 'Milk',
4 'Fish',
5 'Apple',
6 'Bread',
7 'Chicken',
8];
9
10function isThere(arr: string[]): void {
11 let there1: boolean = arr.indexOf('Milk') > -1;
12 let there2: boolean = arr.indexOf('Banana') > -1;
13
14 console.log(there1);
15 console.log(there2);
16}
17
18isThere(shoppingList);
19