var text = document.getElementById('text');
text.title = "New text";
console.log(text.title);

text.style.color = "red";
text.style.backgroundColor = "blue";

text.innerHTML = "New<br>style";

class Person {
    constructor(name, age) {
        this.name = name;
         this.age = age;
    }

    info () {
        console.log("Имя: " + this.name + ", Возраст: " + this.age);        
    }
}

var bob = new Person('Bob', 23);
var alex = new Person('Alex', 45);

alex.name = "Sergey"
bob.name = "Ivan"


alex.info()
bob.info()
//console.log(alex.name + " " + alex.age);
//console.log(bob.name + " " + bob.age)

const SumNumbers = (a, b) => {
    if (typeof a !== 'number' || typeof b !== 'number') {
        return "a and b не числа!"
    }

    if (a <= 0 || b <= 0) {
        return "Неприемливые числа"
    }

    return a + b
}

let sum = SumNumbers(55, 5)
console.log(sum)

const myObject = {
    x: 12,
    y: true,
    z: 'hi'
}

Object.values(myObject).forEach(values => {
    console.log(values)
})

const myObject = {
    x: 12,
    y: true,
    z: 'hi'
}

Object.keys(myObject).forEach(keys => {
    console.log(keys)
})

class Comment {
    constructor(text) {
        this.text = text
        this.votesQty = 0
    }

    upvote() {
        this.votesQty += 1
    }
}

const firstComment = new Comment('First comment')