const form = document.querySelector('form');
const nameInput = document.querySelector('#name');
const emailInput = document.querySelector('#email');
const messageInput = document.querySelector('#message');

form.addEventListener('submit', function (e) {

    if (nameInput.value.trim() === '') {
        alert('Please enter your name.');
        return;
    }

    if (emailInput.value.trim() === '') {
        alert('Please enter your email.');
        return;
    }

    const emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,6}$/;
    if (!emailPattern.test(emailInput.value.trim())) {
        alert('Please enter a valid email address.');
        return;
    }

    if (messageInput.value.trim() === '') {
        alert('Please enter your message.');
        return;
    }

    alert('Message sent successfully!');
    form.reset(); 
});

const timers = document.querySelectorAll(".timer");
const item = document.querySelector(".item");
window.addEventListener("scroll", function luboy() {
  console.log(this.scrollY + 2 * item.clientHeight);
  console.log(item.offsetTop);

  timers.forEach((time) => {
    function rec(i = 0) {
      time.innerHTML = i;
      i++;
      let count = +time.getAttribute("count");
      if (i <= count) {
        setTimeout(() => {
          rec(i);
        }, 10);
      }
    }
    rec();
  });
       this.window.removeEventListener('scroll', luboy)  
});

btn.onclick = () => {
      root.style.setProperty("--color',gold")
      localStorage.setItem('color', 'gold')

    } 
    btn.ondblclick = () => {
      root.style.setProperty("--color',green")
      localStorage.setItem('color', 'green')

    } 
})
root.style.setProperty('--color', localStorage.getItem("color"))

function Person (firstName, lastName) {
    this.firstName = firstName
    this.lastName = lastName
}

const firstPerson = new Person("Fotima", "Nishonova")
const secondPerson = new Person("Zuhra", "Nishonova")

console.log(firstPerson);
console.log(secondPerson);

this.hello = function() {
        console.log(`Hello ${this.firstName} ${this.lastName} `);                                                                          firstPerson.hello()
secondPerson.hello()

function hello() {
    console.log("Salom, dunyo!");
}
hello(); // Funksiyani chaqirish

function sayHello(name) {
    console.log("Salom, " + name + "!");
}
sayHello("Ali"); // Chaqirish: Salom, Ali!