[노마드코더] 바닐라 JS 로 크롬 앱 만들기-2

object

const player = {

  name: "nico",

  points: 10,

};

console.log(player);

player.lastName = "potato";   <<< 점을 이용한 속성값 나타내기, 속성값 추가 가능

 

Functions 

1)

function sayHello(nameOfPerson, age){

  console.log("Hello my name is " + nameOfPerson + "I am " + age),

}

sayHello("nico", 22);

 

2)

const player = {

  name: "nico",

  sayHello: function (otherPersonsName){

    console.log("hello " + otherPersonsName + " Nice to meet you ")

  },

};

 

player.sayHello("lynn") = hello lynn Nice to meet you

 

3)계산기만들기

const calculator = {

  plus: fuction(a,b) {

    return a+b;

  },

    minus: fuction(a,b) {

    return a-b;

  },

    powerof: fuction(a,b) {

    return a**b;

  },

    div: fuction(a,b) {

    return a/b;

  },

};

 

const plusResult = calculator.plus(2,3);

console.log(plusResult);

 

조건문

const age = parseInt(prompt("How old are you?"));     parseInt:숫자형으로바꿔줌

 

if (isNaN(age) || age<0) {      <<isNaN: is not a number? true 또는 false를 출력 / || : or

  console.log("Please write a positive number");

} else  if (age <18 ){

  console.log("You are too young.");

} else  if (age >=18 && age <=50){

  console.log("You can drink beer.");

} else {

  console.log( "You can do whatever you want")

};