hiding grades in canvas

hidden_grades.js

/* Note that this does not disable viewing of grades, it simply
   hides them from the students. As such, this is certainly not
   bullet-proof: a smart and dedicated person will be able to
   expose grades.
   
   Given the above, it is recommended that institutions simply
   wait for the official hidden grade functionality in Canvas. */

// Detect our enrollments
var enrollments = [];
$("a > span.name.ellipsis").each(function(i) {
  enrollmentStr = $(this).parent().text().match(/Enrolled as a [a-zA-Z]*/)
  if (enrollmentStr) {
    enrollments[$(this).parent().attr('href')] = enrollmentStr[0].replace("Enrolled as a ", '');
    enrollments[i] = $(this).parent().attr('href');
  }
});
// Are we a teacher in the current URL?
var teacher = false;
if (enrollments[window.location.pathname.match(/\/courses\/[^\/]+/)] == "Teacher") {
  teacher = true;
}

// Check for visits to unauthorized URLs
if (window.location.pathname.match(/\/grades/) && !teacher) {
  window.location.replace(window.location.href.replace(/\/grades*/, ''));
}

/* These modifications are handled when the document is fully
   rendered */
function removeGrades() {
  // Remove all links to grades
  $("a[href*='/grades']").remove();
  
  // Remove grades and possible values from assignments list
  $(".grade").remove();
  $(".points_possible").remove();
  if ($(".points_text").html()) {
    $(".points_text").html($(".points_text").html().replace("out of", ''));
  }
  
  // Remove quiz scores
  $(".quiz_score").remove();
  $(".summary > tbody > tr > th:contains('Score')").parent().remove();
  $(".question_points_holder").remove();
  $(".user_points").remove();
  
  // Remove grade from submission details
  details = $(".details > div > a.forward").parent();
  if (details.length > 0) {
    details.html(details.html().replace(/Grade\: [0-9a-zA-Z|\-|\+]*/, ''));
    $(".details > div > span:contains('possible')").remove();
  }
}

$(document).ready(function() {
  if (!teacher) {
    removeGrades();
  }
});