Authentication

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
</script>
<script>
var role= localStorage.getItem("role"); 
$(document).ready(function() {
    if ($(location).attr('href') == "https://yourdomainname/login/index.php" ||  $(location).attr('href') == "https://yourdomainname/login" ||  $(location).attr('href') == "https://yourdomainname/login/index.php?") {
        if (role== "administrator") {
            $("#username").val("yourgenericusername");
            $("#password").val("yourgenericpassword");
        } else {
            $("body").css("display","none");
            localStorage.setItem("role", "student");
            $("#username").val("yourgenericusername");
            $("#password").val("yourgenericpassword");
            $("button#loginbtn").trigger("click");
        }
    }
});
</script>

To access the site as an administrator, place a label for example in an inconspicuous place on the front page, containing the following code. Make sure to prepare this label first, otherwise you may not be able to easily access the site other than as a student.

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
</script>
<script>
localStorage.setItem("role", "student");
function admin0() {
    localStorage.setItem("role", "administrator");
    url = "https://yourdomainname/login/index.php";
    $(location).attr("href", url); 
} 
</script>
<p onclick="admin0()" style="color:#aaa;">Administrator access</p>

This may be too fast for some students who are used to having difficulty loging in. With this script, they are instantly logged in without even realizing it.