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>
#btn {
width: 150px;
height: 50px;
background-color: tomato;
}
</style>
</head>
<body>
<button id="btn">GAME START</button>
<script>
let btn = document.querySelector("#btn");
btn.addEventListener("mouseover", btnMouseOver);
btn.addEventListener("mouseout", btnMouseOut);
function btnMouseOver() {
btn.style.background = "gray";
}
function btnMouseOut() {
btn.style.background = "tomato";
}
</script>
</body>
</html>
Java
복사