Old Books 100/100

function oldBooks(input) {
    let favouriteBook = input[0];

    let index = 1;
    let bookName = input[index];
    index++;

    let checkedBooks = 0;
    let isFound = false;
    while (bookName !== "No More Books") {

        if (bookName === favouriteBook) {
        isFound = true;
        console.log(`You checked ${checkedBooks} books and found it.`);
        return;
        }
        checkedBooks++;
        bookName = input[index];
        index++;

    }
        console.log(`The book you search is not here!`);
        console.log(`You checked ${checkedBooks} books.`);
    }