Old Books

function oldBooks(input) {
    let book = input[0];
    let bookCount = Number(input[1]);
    let counter = 0, index = 2;
    let command = input[index++];

    for (let i = 0; i < bookCount && command != ""; i++) {
        if (command == "No More Books" || command == book) {
            if (command == book) {
                console.log(`You checked ${counter} books and found it.`);
            } else {
                console.log(`The book you search is not here!\nYou checked ${counter} books.`);
            }
            return;
        }
        command = input[index++];
        counter++;
    }
}