[A'dan Z'ye] JavaScript Öğreniyoruz #1

https://tik.lat/0V9gT

<script src="app.js"></script>

console.log("Merhaba Dünya");

var a = 10;
var b = 20;
var c = 30;

console.log(a,b,c);

var a = 10;
console.log(a);

var a = 10;

console.log(typeof a);

var a = "javascript";

console.log(a);

console.log(typeof a);

var a = true;

console.log(typeof a);

var a = null;
console.log(a);

var a;

console.log(a);

var a = [1,2,3,4];

console.log(a);

console.log(typeof a);

let a = 10;
let a= 20;
console.log(a);

const a = 10;
console.log(a);

const a = 10;
console.log(a);
a = 20;
console.log(a);

const a = [1,2,3,4,5];
a = [1,2,3,4,5,6];
console.log(a);

const a = [1,2,3,4,5];

a.push(6);

const a = [1,2,3,4,5];
a.push(6);

let value ();
value = 10;

console.log(value);

let value;
value = 10;
console.log(value);

let value;
value = String(10);
console.log(value);

console.log(typeof value);

let value;
value = String(true);

console.log(typeof value);

let value;
value = (10).toString();

console.log(value);

let value = ("10");

let value = Number("10");

let value;
value = parseFloat("1.15");

let value;
value = parseInt("1");

const a = "hello" + "10";

console.log(typeof a);

const a = "hello" + "10";
console.log(typeof a);

 let value;
const value1 = 10;
const value2 = 20;

console.log(value1 + value2);

let value;
const value1 = 10;
const value2 = 20;
console.log(value1 - value2);

let value;
const value1 = 10;
const value2 = 20;
console.log(value1 * value2);

let value;
const value1 = 10;
const value2 = 20;
console.log(value1 / value2);

let value;
const value1 = 10;
const value2 = 20;
console.log(value1 % value2);

let value;
value = Math.PI

let value;
value = Math.round(3.4);

let value;
value = Math.ceil(3.4);

let value;
value = Math.floor(3.8);

let value;
value = Math.sqrt(36);

let value;
value = Math.abs(-36);

let value;
value = Math.pow(10,4);

let value;
value = Math.max(1,10,-100,50);

let value;
value = Math.min(1,10,-100,50);

let value;
value = Math.random();

let value;
value = Math.random() *50;

let value;
value = Math.floor(Math.random() *50);

let value;

const value1 = "Java";
const value2 = "script";

value = value1 + value2;

console.log(value);

let value;
const value1 = "Java";
const value2 = "script";
value = value1 + value2;
console.log(value);

value = value1 + " " + value2;

let value;
const value1 = "Java";
const value2 = "script";
value = value1 + " " + value2;
console.log(value);

value = value + "ders";

value += "ders";

let value;
const value1 = "Java";
const value2 = "script";
value = value1 + value2;
value = value + "ders";
console.log(value);

value = value1.length;

let value;
const value1 = "Java";
const value2 = "script";
value = value1.length;
console.log(value);

value = value1.concat(value2,"ders");

let value;
const value1 = "Java";
const value2 = "script";
value = value1.concat(value2,"ders");
console.log(value);

value = value1.toLowerCase();

let value;
const value1 = "Java";
value = value1.toLowerCase();
console.log(value);

value = value1.toUpperCase();

let value;
const value1 = "Java";
value = value1.toUpperCase();
console.log(value);

let value;
value1 = "java";
value = value1[3];
console.log(value);

value = value1.charAt(1);

let value;
value1 = "java";
value = value1.charAt(1);
console.log(value);

value = value1[value1.length -2];

let value;
value1 = "java";
value = value1[value1.length -2];
console.log(value);

value = value1.indexOf("v");

let value;
value1 = "java";
value = value1.indexOf("v");
console.log(value);

let value;
const dil = "ingilizce,almanca,fransızca";

value = dil.split(",");

let value;
const dil = "ingilizce,almanca,fransızca";
value = dil.split(",");
console.log(value);

let value;
const dil = "ingilizce,almanca,fransızca";

value = dil.replace("almanca","Turkce");

let value;
const dil = "ingilizce,almanca,fransızca";
value = dil.split(",");
value = dil.replace("almanca","Turkce");
console.log(value);

value = dil.includes("fransızca");

let value;
const dil = "ingilizce,almanca,fransızca";
value = dil.split(",");
value = dil.includes("fransızca");
console.log(value);

const name = "black";
const department = "bilgi";
const salary = 4000;

const a = "İsim: " + name + "\n" + "Departman: " + department + "\n" + "Maaş: " + salary;

const name = "black";
const department = "bilgi";
const salary = 4000;

const a = `İsim:${name}\n`;

const a = `İsim:${name}\nDepartman:${department}\nMaaş:${salary}\n`;

let value;
const numbers = [1,2,3,4,5,6];

let value;
const numbers = new Array(1,2,3,4,5,6);

let value;
const numbers = [1,2,3,4,5,6];
value = numbers.length;

value = numbers[0];

numbers[3] = 10;

value = numbers.indexOf(6);

numbers.push(7);

numbers.unshift(0);

numbers.pop()

numbers.shift()

numbers.splice(0,4);

numbers.reverse();

value = numbers.sort();

const programmer {};

const programmer = { 
name : "Black",
Age : 30,
Mail : "[email protected]",
};

const programmer = {
Name : "black",
Age : 30,
mail : "[email protected]",
address : {
city : "antalya",
street : "Atatürk",
},
}

console.log(programmer);

const programmer2 = [
{name : "Black", Age : 30},
]

const date = new Date();

const birthday = new Date(5/19/1881);

value = birthday;
value = birthday.getMonth();

value = birthday.getDate();

value = birthday.getDay();

value = birthday.getHours();

value = birthday.getMinutes();

value = birthday.getSeconds();

value = birthday.setMonth(7);

value = birthday.setDate(10);

value = birthday.setFullYear(2020);

value = birthday.setHours(4);

value = birthday.setMinutes(0);

value = birthday.setSeconds(0);

console.log(2 == 2);

console.(2 == "2");

console.log("2" === "2");

console.log(2 === 2);

console.log(2 > 1);

console.log(1 < 2);

console.log(1 != 2);

console.log(2 >= 2);

console.log(2 >= 1);

console.log(2 <= 2);

console.log(1 <= 2);

console.log(!(2 == 2));

console.log((2 == 2) && (3 == 3));

console.log((3 != 4) && (3 == 4));

console.log((3 == 3) || (4 == 5));

if (4 == 4){console.log("Karşılaştırma doğru");}

if(4 == 5){console.log("Karşılaştırma Doğru");}
else {console.log("Karşılaştırma yanlış")}

const islem = "2";
if(islem === "1"){console.log("İşlem 1");}
else if(islem === "2"){console.log("İşlem 2");}
else if (islem === "3"){console.log("İşlem 3");}

console.log(4 === 5 ? "İfade Doğru" : "İfade yanlış");

function merhaba() {console.log("ilk fonksiyon");}

merhaba();

function merhaba(name,surname){console.log(`İsim : ${name} soyisim : ${surname}`)}

merhaba("black","coder");

function square(x){return x*x;}
function cube(x){return x*x*x;}

let a = square(5);
a = cube(a);
console.log(a);

(function merhaba(){console.log("IIFE");})();

const data = {add:function(){console.log("ekle");}}

data.add();

let i = 0;
while(i < 10){console.log(i);
 i++;}

if (i == 5){break;}

let i = 0;
while(i < 10){console.log(i);
if (i == 5){break;}
i++}

if (i == 3){i++;
continue;}

let i = 0;
while(i < 10)
{if(i == 3){i++;
continue;}
console.log(i);
i++;}

do{console.log(i);
i++;}
while(i < 10);

const langs = ["js","java","html"];

for (let index = 0;index < langs.length;index++){console.log(langs[index]);}

alert("Javascript");

const cevap = confirm("Emin Misiniz ?");

const cevap = prompt("9 + 9 = ?");

console.log(window);

let value;
value = window;
value = window.locatıon;
console.log(value);

let value;
value = windows.locatıon.host;
console.log(value);

if (confirm("Sayfa Yenilensin Mi?")) {window.locatıon.reload();}

console.log(window);

let value1 = 10;
var value2 = 20;
const value3 = 30;

function Func(){var value1 = 40;
let value2 = 50;
const value3 = 60;}
Func();

if (true)
{let value1 = 70;
const value2 = 80;}