<input id="elem" type="button" value="Click me"/>
<script>
  function handler1() {
    alert('Thanks!');
  };
  function handler2() {
    alert('Thanks again!');
  }
  elem.onclick = () => alert("Hello");
  elem.addEventListener("click", handler1); // Thanks!
  elem.addEventListener("click", handler2); // Thanks again!
</script>

button.addEventListener("click", () => alert("1"));

button.removeEventListener("click", () => alert("1"));

const fruits = ["Banana", "Orange", "Apple", "Mango"];
console.log(fruits);

const person = {
name: "Alice",
age: 15,
city:"New York"
};
console.log(person);

const person = {firstName:"John", lastName:"Doe", age:50, eyeColor:"blue"};

const person = {
  firstName: "John",
  lastName: "Doe",
  age: 50,
  eyeColor: "blue"
};

const person = {};

// Add Properties
person.firstName = "John";
person.lastName = "Doe";
person.age = 50;
person.eyeColor = "blue";

objectName.propertyName
objectName["propertyName"]

const person = {
    firstName: "John",
    lastName: "Doe",
    age: 50,
    eyeColor: "blue"
  };
  
  delete person.age;
  console.log(person);

const person = {
  firstName: "John",
  lastName: "Doe",
  id: 5566,
  fullName: function() {
    return this.firstName + " " + this.lastName;
  }
};

// `fullName` metodini chaqirish va uning natijasini konsolga chiqarish
console.log(person.fullName());

person.name = function () {
  return this.firstName + " " + this.lastName;
};

const person = {
  firstName: "John",
  lastName: "Doe",
  id: 5566,
  name: function () {
    return this.firstName + " " + this.lastName;
  }
};

// `name` metodini chaqirish va natijasini konsolga chiqarish
console.log(person.name());

//ORIENTED OPERATING PROGRAMMING

class Typing {
  constructor({el, interval, delay}){
    this.el = document.querySelector(el);
    this.interval = interval || 500 
    this.delay = delay == undefined ? 1000 : delay
    this.text = this.el.innerHTML.trim()
    this.el.innerHTML = ""
    setTimeout(() => this.write(i), this.delay);  
  }
  write(i = 0){
    this.el.innerHTML += this.text[i] 
    i++;
    if (i < this.text.length) {
      setTimeout(() => this.write(i), this.interval);      
    }

  }
}
new Typing({
    el: ".header__content h1" ,
    interval: 300,
    delay:1000
});