자바스크립트 8 팁과 요령 자바스크립트를 적게 작성하는 방법 🙂

1. 변수 선언

let firstName;
let lastName;
let surName = "beast";

let firstName, lastName, surName = "beast";

2. 삼항 연산자

let answer, value = 15;

if(value%2 = 0)
{
    answer = "Number is even";
}else{
    answer = "Number is not even";
}

let answer = value&2 = 0 ? "Number is even" : "Number is not even"

3. 삼항 짧은 For-Loop

const languages = ["html","css","js"];

for(let i = 0;i < language.length;i++){
    const languages = languages[i];
    console.log(languages);
}

for(let languages of languages)console.log(languages);

4. 템플릿 리터럴

const fullName = "codingBeast";
const timeOfDay = "afternoon";

const greeting = "Hello" + fullName + ", I wish you a good" + timeOfDay + "!";

const greeting = `Hello ${fullName}, I wish you a good ${timeOfDay}`;

5. 할당 연산자

a = a+b;
a = a-b;

a += b;
a -= b;

6. 객체 배열 표기법

let arr = new Array();
arr[0] = "html"
arr[1] = "css";
arr[2] = "js";

let arr = ["html","css","js"];

7. 화살표 기능

function addition(a,b){
    console.log("addition",a + b);
}

addition = (a,b) => console.log("addition", a + b);

8. 동일한 키와 값

const userDetails = {
    name: name,     // key:value
    email: email,
    age: age,
    location: location,
};