09. Fruit or Vegetable

function fruitOrVegetable(input) {
    let product = input[0];

    if (product == "banana" || product == "apple" || product == "kiwi" || product == "cherry" || product == "lemon" || product == "grapes") {
        console.log("fruit");
    } else if (product == "tomato" || product == "cucumber" || product == "pepper" || product == "carrot") {
        console.log("vegetable");
    } else {
        console.log("unknown");
    }
}

Второ решение(switch):

function fruitOrVegetable(input) {
    let product = input[0];

    switch (product) {
        case "banana":
        case "apple":
        case "kiwi":
        case "cherry":
        case "lemon":
        case "grapes":
            console.log("fruit");
            break;
        case "tomato":
        case "cucumber":
        case "pepper":
        case "carrot":
            console.log("vegetable");
            break;
        default:
            console.log("unknown");
            break;
    }
}

Решение с масив:

function fruitOrVegetable(input) {
    let product = input[0];
    let vegetable = ["tomato", "cucumber", "pepper", "carrot"];
    let fruit = ["banana", "apple", "kiwi", "cherry", "lemon", "grapes"];

    console.log(fruit.includes(product) ? "fruit" : vegetable.includes(product) ? "vegetable" : "unknown");
}