99년 5월 24일 11시 33분 30초

getDay()가 숫자를 리턴하는 것 같다.

getTime() Get the time (milliseconds since January 1, 1970)
In JavaScript, arrays use numbered indexes.

In JavaScript, objects use named indexes.

var fruits = ["Banana", "Orange","Apple", "Mango"];

document.getElementById("demo").innerHTML = fruits.join(" * ");
Banana * Orange * Apple * Mango

var fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.shift();
orange apple mango

var fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.unshift("Lemon");

delete fruits[0]; // Changes the first element in fruits to undefined
delete쓰면 undefined hole을 남기기 때문에 팝이나 쉬프트를 쓸 것을 권장함

fruits.splice(2, 0, "Lemon", "Kiwi"); add new items to an array
두번째 파라미터 0은 얼마나 remove할 것인가를 나타냄
fruits.splice(2, 0, "Lemon", "Kiwi");

var myChildren = myGirls.concat(myBoys);

var fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango"];
var citrus = fruits.slice(3);
apple, mango
fruits.slice(1,3) [1,3) 개폐 구간
orange,lemon

	Created by jang Ji over 7 years ago

Note on w3school(js), created by jang Ji on 03/08/2016.