script.js

// console.log("Hello World!")

// // Declaration Assignment, tanimlama ve atama operatorleri
// // Var, let, const

// let my_first_variable = 23

// // Naming Rules 

// // let 2nd_variable2 = 23 // Sayi ile baslayamaz

// // let my-second-variable // tire iceremez

// // let my.second_variable // Noktalama isareti bulunduramz ( _ ) haric

// // Typing Cases

// // Pascal Case: MyFirstVariable
// // Camel Case: myFirstVariable
// // Snake Case: my_first_variable
// // Kebab Case: my-first-variable
// // Upper Case: MYFIRSTVARIABLE






// // VARIABLE TYPES
// // String
// let studentName = "Melike Yavuz Turk"

// // Integer, Float, Decimal -> Number
// let number1 = 23

// // Null
// let thisisanullvariable = null

// // Boolean -> True, False
// let active = true

// // Array
// let numbers = [1, 2, 3, 4]
// let numbers2 = [1, "2", 3, true, null, undefined, []]

// // Object
// let user = {
//     name: "ahmet",
//     age: 25
// }
// console.log(user)
// user['age'] = 42
// console.log(user)

// // Function
// function addNumbers(num1, num2) {
//     let sum = num1 + num2
//     console.log(sum)
// }



// addNumbers(42, 15)
// addNumbers(45, 11)


// // Undefined
// let thisisaundefinedvariable = undefined

// console.log(thisisaundefinedvariable)

// // String Operations

let myString = "string olsun"

myString = myString.toUpperCase()

console.log(myString)

// Number Operations



let myNumber = 12.12421

console.log(myNumber)


myNumber = myNumber.toFixed(3)

console.log(myNumber)

let myNumber2 = 24.2412

myNumber + myNumber2
myNumber - myNumber2
myNumber * myNumber2
myNumber / myNumber2
myNumber % myNumber2
myNumber ** 2

// Array operations

const myArray = [1, 2, 3, 4, 5]

console.log(
    myArray.length)

console.log(myArray[2 + 1])

const myUnflatArray = [1, 2, 3, [4, 5]]

console.log(myUnflatArray.flat())

console.log(myArray.reverse())