영상
개념
<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
#menu {
display: none;
}
</style>
</head>
<body>
<a href="#" id="list">목차 보기</a>
<hr>
<ul id="menu">
<li>메뉴1</li>
<li>메뉴2</li>
<li>메뉴3</li>
<li>메뉴4</li>
</ul>
<script>
let isShow = false;
function displayList() {
if(isShow == false) {
document.querySelector("#menu").style.display = "block"; // 노출 처리
list.innerHTML = "목차 닫기";
// isShow = true;
} else {
document.querySelector("#menu").style.display = "none"; // 숨김 처리
list.innerHTML = "목차 보기";
// isShow = false;
}
isShow = !isShow;
}
let list = document.querySelector("#list");
list.addEventListener("click", displayList);
</script>
</body>
</html>
Java
복사