<!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>아이디 로그인</title>
<script>
function login() {
var id = document.getElementById('userid');
var idd = id.value;
var inf = document.getElementById('info').innerHTML;
document.getElementById('info').innerHTML = inf + idd + '입장 <br>';
id.value = "";
document.getElementById('userpass').value = "";
}
</script>
</head>
<body>
<form>
아이디
<input type="text" id="userid"><br>
비밀번호
<input type="password" id="userpass"><br>
<button onclick="login()">로그인</button>
<input type="button" onclick="login()" value="로그인2">
<div id="info"></div>
</form>
</body>
</html>