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index.html
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<html>
<head></head>
<style>
#root {
background-color: tomato;
color: white;
font-size: 2em;
text-align: center;
height: 100vh;
}
</style>
<body>
<!-- INI KONTEN KITA -->
<div id="root">
<input type="text" placeholder="username" id="usernameInput" />
<input type="password" placeholder="password" id="passwordInput" />
<button onclick="onLogin()" id="loginButton">LOGIN</button>
<button onclick="onLogout()" id="logoutButton">LOGOUT</button>
<br />
<h1 id="admin">Login as admin</h1>
<h1 id="basic">Login as user</h1>
</div>
<script type="application/javascript">
let usernameInput = document.getElementById('usernameInput');
let passwordInput = document.getElementById('passwordInput');
let loginButton = document.getElementById('loginButton');
let logoutButton = document.getElementById('logoutButton');
let admin = document.getElementById('admin');
let basic = document.getElementById('basic');
admin.style.display = "none";
basic.style.display = "none";
logoutButton.style.display = "none";
function onLogin() {
localStorage.setItem("username", usernameInput.value)
logoutButton.style.display = "block";
if (usernameInput.value == "admin" && passwordInput.value == "admin123") {
localStorage.setItem("role", "admin")
usernameInput.style.display = "none";
passwordInput.style.display = "none";
loginButton.style.display = "none";
admin.style.display = "block";
basic.style.display = "none";
}
else {
localStorage.setItem("role", "basic")
usernameInput.style.display = "none";
passwordInput.style.display = "none";
loginButton.style.display = "none";
admin.style.display = "none";
basic.style.display = "block";
}
}
if (localStorage.getItem('username')) {
usernameInput.style.display = "none";
passwordInput.style.display = "none";
loginButton.style.display = "none";
logoutButton.style.display = "block";
if (localStorage.getItem('role') == "admin") {
admin.style.display = "block";
basic.style.display = "none";
}
else {
admin.style.display = "none";
basic.style.display = "block";
}
}
function onLogout() {
localStorage.clear();
location.reload();
}
</script>
</body>
</html>