11-digitAsWord

function convertDigitToWord(digit) {
    switch(digit) {
        case 1: console.log("one"); break;
        case 2: console.log("two"); break;
        case 3: console.log("three"); break;
        case 4: console.log("four"); break;
        case 5: console.log("five"); break;
        case 6: console.log("six"); break;
        case 7: console.log("seven"); break;
        case 8: console.log("eight"); break;
        case 9: console.log("nine"); break;
        default: console.log("invalid input"); break;
    }
}
convertDigitToWord(8);
convertDigitToWord(3);
convertDigitToWord(5);