Write a code of log in page

function logIn() {

  var username = prompt("Enter username:");
  var password = prompt("Enter password:");

  if (username != "Admin" || password != "123") {

    alert("You have entered an invalid username or password");
    console.log("You have entered an invalid username or password");

  } else {

    alert("You are now logged in");
    console.log("You are now logged in");

  }

}
logIn();