<!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>
<li id="active" class="t1 t2">test</li>
<script>
const li = document.getElementById("active");
console.log(li.className); // "t1 t2"
console.log(li.classList[0], li.classList[1]); // "t1 t2"
</script>
</body>
</html>
Backend Engineer