11.01.FruitShop.js

function fruitShop(fruit, day, quantity){
let price = 0;

    switch (day) {
        case `Monday`:
        case `Tuesday`:
        case `Wednesday`:
        case `Thursday`:
        case `Friday`:
            switch (fruit) {
                case `banana`:
                    price = 2.50;
                    break;
                case `apple`:
                    price = 1.20;
                    break;
                case `orange`:
                    price = 0.85;
                    break;
                case `grapefruit`:
                    price = 1.45;
                    break;
                case `kiwi`:
                    price = 2.70;
                    break;
                case `pineapple`:
                    price = 5.50;
                    break;
                case `grapes`:
                    price = 3.85;
                    break;
                default:
                    console.log(`error`);
                    return;    
            }
            break;

        case `Saturday`:
        case `Sunday`:
            switch (fruit) {
                case `banana`:
                    price = 2.70;
                    break;
                case `apple`:
                    price = 1.25;
                    break;
                case `orange`:
                    price = 0.90;
                    break;
                case `grapefruit`:
                    price = 1.60;
                    break;
                case `kiwi`:
                    price = 3.00;
                    break;
                case `pineapple`:
                    price = 5.60;
                    break;
                case `grapes`:
                    price = 4.20;
                    break;
                default:
                    console.log(`error`);
                    return;    
            }
            break;
    
        default:
            console.log(`error`);
            return;
    }
   
    console.log((quantity * price).toFixed(2));
    
}

fruitShop(`tomato`, `Monday`, 0.5);