# live, static

live -> document에 element를 추가/삭제 했을 때 바로 반영됨

static -> 바로 반영되지 않음

```javascript
const buttons = document.getElementById("buttons");
const sports = document.querySelectorAll("sports");


const onClickHandler = () => {
    const el = document.createElement("li"); //param은 태그이름으로 엘리먼트 생성, 다큐먼트에 표현되려면 노드에 먼저 반영되어야함
    el.textContext = "버튼";
    buttons.appendChild(el);
    sports.appendChild(el); //nodeList는 바로 반영되지 않음
}

buttons.onClick = onClickHandler; //buttons를 클릭하면 마지막 child에 생김

//노드 트리에 노드(엘리먼트)를 추가/삭제하면 HTMLCollection에 추가되고 바로 반영됨

const el = document.createElementNS(namespace, "div");

<div xmlns:a="https://www.w3.org/TR/html5/" /> //namespace 엘리먼트간의 충돌을 방지하기 위해 URI로 표현

```


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