Capture the vocabulary from Monarch App

Monarch_Capture_Vocabulary.user.js

// ==UserScript==
// @name         Monarch Capture Vocabulary
// @namespace    http://danielbair.com/
// @version      0.3
// @description  Capture the vocabulary from Monarch App
// @author       Daniel Bair
// @match        https://monarch-app.aop.com/curriculum/section/*
// @icon         https://www.google.com/s2/favicons?domain=aop.com
// @grant        none
// @copyright    2020+, Daniel Bair
// ==/UserScript==

(function() {
    'use strict';
    // Your code here...

    window.addEventListener("load", function(){

        var vocabelm = document.getElementsByClassName('gl-vocabulary')[0];
        var vocabtable = vocabelm.getElementsByTagName("table")[0].getElementsByTagName("tbody")[0];
        var vocabrow = vocabtable.getElementsByTagName("tr");
        var vocablist = "";
        for(var i=0; i<vocabrow.length; i++) {
            vocablist = vocablist + vocabrow[i].getElementsByTagName("td")[1].innerHTML + "\n";
        }

        function copyVocab() {
            if (document.queryCommandSupported && document.queryCommandSupported("copy")) {
                var textarea = document.createElement("textarea");
                textarea.textContent = vocablist;
                textarea.style.position = "fixed"; // Prevent scrolling to bottom of page in MS Edge.
                document.body.appendChild(textarea);
                textarea.select();
                try {
                    return document.execCommand("copy"); // Security exception may be thrown by some browsers.
                } catch (ex) {
                    console.warn("Copy to clipboard failed.", ex);
                    return false;
                } finally {
                    console.log("Copy to clipboard success.");
                    alert("Spelling Word List copied to Clipboard");
                    document.body.removeChild(textarea);
                }
            }
        }

        var button = document.createElement("input");
        button.type = "button";
        button.value = "Copy Spelling Word List to Clipboard";
        button.onclick = copyVocab;
        vocabelm.appendChild(button);

    });

})();