string-number-logic-drills.js

function jediName(firstName, lastName) {
    return lastName.slice(0, 3) + firstName.slice(0, 2);
}

console.log(jediName('Beyonce', 'Knowles'));


function beyond(num) {
    if (num === Infinity || num === -Infinity) {
        console.log('And beyond');
    }
    else if (num < 0) {
        console.log('To negative infinity');
    }
    else if (num > 0) {
        console.log('To infinity');
    }
    else {
        console.log('Staying home');
    }
}

beyond(4);
beyond(-5);
beyond(Infinity);
beyond(-Infinity);
beyond(0);

function decode(code) {
    var firstCharacter = code.charAt(0);
    if (firstCharacter === 'a') {
        return code.charAt(1);
    }
    else if (firstCharacter === 'b') {
        return code.charAt(2);
    }
    else if (firstCharacter === 'c') {
        return code.charAt(3);
    }
    else if (firstCharacter === 'd') {
        return code.charAt(4);
    }
    else {
        return ' ';
    }
}

console.log(decode('craft'));
console.log(decode('block'));
console.log(decode('argon'));
console.log(decode('meter'));
console.log(decode('bells'));
console.log(decode('brown'));
console.log(decode('croon'));
console.log(decode('droop'));