Javascript

{
    function func(){
        document.write("실행되었습니다.
");
    }
    func();
}

{
    const func = function(){
        document.write("실행되었습니다.
");
    }
    func();
}

{
    function func(str){
        document.write(str);
    }
    func("실행되었습니다.
");
}

{
    function func(){
        const str ="실행되었습니다.";
        return str;
    }
    document.write(func());
}

{
    func = () => {
        document.write("실행되었습니다.
");
    }
    func();
}
// function func( ){
//     document.write("실행되었습니다.");
// };

{
    const func = () => {
        document.write("실행되었습니다.
");
    }
    func();
}
// const func = function( ){
//     document.write("실행되었습니다.");
// };

{
    func = (str) => {
        document.write(str);
    }
    func("실행되었습니다. 
");
}

{
    func = () => {
        const str = "실행되었습니다 
";
        return str;
    }
    document.write(func());
}

const func = (str) => {
        return str;
}
document.write(func("실행되었습니다."));

const func = str => {
    return str;
}
document.write("실행되었습니다.");

const func = str => str;
document.write("실행되었습니다.");

func = str => str;
document.write("실행되었습니다.");

function func(num, str1, str2){
    document.write(num + "." + str1 + "가 " + str2 + "되었습니다.<br>");
}
func("1","함수","실행");
func("2","자바스크립트","실행");
func("3","리액트","실행");

function func(num, str1, str2){
    document.write(num + "." + str1 + "가 " + str2 + "되었습니다.<br>");
}
const youNum1 = 1;
const youNum2 = 2;
const youNum3 = 3;
const youStr1 = "함수";
const youStr2 = "자바스크립트";
const youStr3 = "리액트";
const youCom1 = "실행";

func(youNum1, youStr1, youCom1);
func(youNum2, youStr2, youCom1);
func(youNum3, youStr3, youCom1);

function func(num, str1, str2){
    document.write(num + "." + str1 + "가 " + str2 + "되었습니다.<br>");
}
const num = [1, 2, 3];
const info = ["함수", "자바스크립트", "리액트"];
const str = ["실행"];

func(num[0], info[0], str[0]);
func(num[1], info[1], str[0]);
func(num[2], info[2], str[0]);

function func(num, str1, str2){
    document.write(num + "." + str1 + "가 " + str2 + "되었습니다.<br>");
}
const info = {
    num1 : 1,
    name1 : "함수",
    num2 : 2,
    name2 : "자바스크립트",
    num3 : 3,
    name3 : "리액트",
    word : "실행"
}

func(info.num1, info.name1, info.word);
func(info.num2, info.name2, info.word);
func(info.num3, info.name3, info.word);

function func(num, str1, str2){
    document.write(num + "." + str1 + "가 " + str2 + "되었습니다.<br>");
}
const info = [
    {
        num : 1,
        name : "함수",
        word : "실행"
    },
    {
        num : 2,
        name : "자바스크립트",
        word : "실행"
    },
    {
        num : 3,
        name : "리액트",
        word : "실행"
    }
]

func (info[0].num, info[0].name, info[0].word);
func (info[1].num, info[1].name, info[1].word);
func (info[2].num, info[2].name, info[2].word);

const info = {
    num1 : 1,
    name1 : "함수",
    num2 : 2,
    name2 : "자바스크립트",
    num3 : 3,
    name3 : "리액트",
    word : "실행",
    result1 : function(){
        document.write(info.num1 + "." + info.name1 + "가 " + info.word + "되었습니다.
");
    },
    result2 : function(){
        document.write(info.num2 + "." + info.name2 + "가 " + info.word + "되었습니다.
");
    },
    result3 : function(){
        document.write(info.num3 + "." + info.name3 + "가 " + info.word + "되었습니다.
");
    }
}

info.result1();
info.result2();
info.result3();

function Func(num, name, word){
    this.num = num;
    this.name = name;
    this.word = word;

    this.result = function(){
        document.write(this.num + "." + this.name + "가 " + this.word + "되었습니다.
");
    }
}

const info1 = new Func(1,"함수","실행");
const info2 = new Func(2,"자바스크립트","실행");
const info3 = new Func(3,"리액트","실행");

info1.result();
info2.result();
info3.result();

function Func(num, name, word){
    this.num = num;
    this.name = name;
    this.word = word;
}

Func.prototype.result = function(){
    document.write(this.num + "." + this.name + "가 " + this.word + "되었습니다.<br>");
}

const info1 = new Func(1,"함수","실행");
const info2 = new Func(2,"자바스크립트","실행");
const info3 = new Func(3,"리액트","실행");

info1.result();
info2.result();
info3.result();

function Func(num, name, com){
    this.num = num;
    this.name = name;
    this.com = com;
};
Func.prototype = {
    result1 : function(){
        document.write(`${this.num}. ${this.name}가 ${this.com}되었습니다.
`);
    },
    result2 : function(){
        document.write(`${this.num}. ${this.name}가 ${this.com}되었습니다.
`);
    },
    result3 : function(){
        document.write(`${this.num}. ${this.name}가 ${this.com}되었습니다.
`);
    }
}

const info1 = new Func("101", "함수", "실행");
const info2 = new Func("201", "자바스크립트", "실행");
const info3 = new Func("301", "리액트", "실행");

info1.result1();
info2.result2();
info3.result3();

(function (){
    document.write("500. 함수가 실행되었습니다.
")
})();

function func(str = "600. 함수가 실행되었습니다.
"){
    document.write(str);
}
func();

function func(str1, str2){
    document.write(arguments[0]);
    document.write(arguments[1]);
};
func("함수실행1", "함수실행2");

function func(num){
    if(num<=1){
        document.write("함수가 실행되었습니다.")
    } else {
        document.write("함수가 실행되었습니다.")
        func(num-1);
    }
};
func(10);

function animation(){
    document.write("애니메이션이 실행되었습니다.")

    requestAnimationFrame(animation)
}
animation();

function func(){
    document.write("2. 함수 실행")
}
function callback(str){
    document.write("1. 함수 실행")
    str();
}
callback(func);