<!DOCTYPE html>
<html lang="en">
<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>
</head>
<body>
<input type="button" value="login" onclick="func()" />
<!-- prompt()는 사용자로부터 입력받은 값을 반환한다 -->
<script>
const func = () => {
if (prompt("login") === "ysh") {
alert("welcome");
} else {
alert("denied");
}
};
</script>
</body>
</html>