canvas_assignment_highlighter.user.js

// ==UserScript==
// @name         Canvas Assignment Highlighter
// @namespace    https://the-b.org/
// @version      0.1
// @description  Highlight unsubmitted assignments on Canvas.
// @author       Kenny Root
// @match        https://*.instructure.com/courses/*/assignments
// @grant        GM_log
// @require      https://code.jquery.com/jquery-latest.js
// ==/UserScript==

var printAssignments = function() {
    $(".assignment-list").each(function() {
        $(this).find(".assignment").each(function() {
            var unsubmitted = false;
            $(this).find(".score-display").each(function() {
                if (~$(this).prop("title").indexOf("No Submission")) {
                    unsubmitted = true;
                }
            });
            if (unsubmitted) {
                $(this).find(".ig-row").each(function() {
                    $(this).css("background-color", "#fcc");
                });
            }
        });
    });
}

$(document).ready(function() {
    'use strict';

    setInterval(printAssignments, 1000);
});