制作8个完全风格完全不同的教育apphtml5页面并运用到css、js、juquery，能用到的功能都用上

很好，这是一个非常好的练习。在这里，我将提供一些不同风格的教育app的示例，并展示如何使用CSS、JS、JQuery和功能来实现它们。

1. 教育游戏应用
这个应用程序主要旨在通过游戏方式教授概念。它将包含以下内容：
- 题目列表
- 时间限制
- 得分板
- 游戏规则

HTML结构：

<div id="game">
  <h1>教育游戏</h1>
  <div id="question-list">
    <div class="question">问题1</div>
    <div class="question">问题2</div>
    <div class="question">问题3</div>
  </div>
  <div id="timer">时间: <span id="time-remaining"></span></div>
  <div id="scoreboard">得分: <span id="score"></span></div>
  <div id="rules">游戏规则</div>
  <button id="start">开始游戏</button>
</div>

CSS样式：

#game {
  width: 400px;
  margin: 0 auto;
  text-align: center;
}
#question-list {
  margin-bottom: 20px;
}
.question {
  display: inline-block;
  margin: 0 10px;
  padding: 10px;
  background-color: #e0e0e0;
  cursor: pointer;
}
.question:hover {
  background-color: #ccc;
}
#timer, #scoreboard {
  margin-bottom: 10px;
}
#rules {
  margin-bottom: 20px;
  text-decoration: underline;
  cursor: pointer;
}
#start {
  padding: 10px;
  background-color: #4caf50;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
#start:hover {
  background-color: #3e8e41;
}

JS代码：

var questions = [
  "问题1",
  "问题2",
  "问题3"
];
var score = 0;
var timeRemaining = 60;

function displayQuestions() {
  var questionList = document.getElementById("question-list");
  for (var i = 0; i < questions.length; i++) {
    var questionElement = document.createElement("div");
    questionElement.className = "question";
    questionElement.innerHTML = questions[i];
    questionList.appendChild(questionElement);
  }
}

function startGame() {
  var startButton = document.getElementById("start");
  startButton.disabled = true;
  var timerElement = document.getElementById("time-remaining");
  timerElement.innerHTML = timeRemaining;
  var timerInterval = setInterval(function() {
    timeRemaining--;
    timerElement.innerHTML = timeRemaining;
    if (timeRemaining <= 0) {
      clearInterval(timerInterval);
      endGame();
    }
  }, 1000);
  var questionList = document.getElementById("question-list");
  questionList.addEventListener("click", function(event) {
    var target = event.target;
    if (target.classList.contains("question")) {
      score++;
      target.classList.add("answered");
      document.getElementById("score").innerHTML = score;
    }
  });
}

function endGame() {
  var questionList = document.getElementById("question-list");
  questionList.removeEventListener("click");
  var startButton = document.getElementById("start");
  startButton.disabled = false;
  score = 0;
  timeRemaining = 60;
  document.getElementById("score").innerHTML = score;
  var answeredQuestions = document.querySelectorAll(".answered");
  for (var i = 0; i < answeredQuestions.length; i++) {
    answeredQuestions[i].classList.remove("answered");
  }
}

displayQuestions();
document.getElementById("start").addEventListener("click", startGame);
document.getElementById("rules").addEventListener("click", function() {
  alert("这是游戏规则");
});

2. 学习笔记应用
这个应用程序旨在允许学生在线创建笔记并将它们保存到他们的帐户中。
它将包含以下内容：
- 登录表单
- 注册表单
- 笔记列表
- 笔记编辑器

HTML结构：

<div id="notes-app">
  <div id="login-form">
    <h2>登录</h2>
    <form>
      <div>
        <label for="username">用户名:</label>
        <input type="text" id="username" name="username">
      </div>
      <div>
        <label for="password">密码:</label>
        <input type="password" id="password" name="password">
      </div>
      <button type="submit">登录</button>
    </form>
  </div>
  <div id="register-form">
    <h2>注册</h2>
    <form>
      <div>
        <label for="new-username">用户名:</label>
        <input type="text" id="new-username" name="new-username">
      </div>
      <div>
        <label for="new-password">密码:</label>
        <input type="password" id="new-password" name="new-password">
      </div>
      <button type="submit">注册</button>
    </form>
  </div>
  <div id="notes-list">
    <h2>我的笔记</h2>
    <ul id="notes">
      <li><a href="#">笔记1</a></li>
      <li><a href="#">笔记2</a></li>
      <li><a href="#">笔记3</a></li>
    </ul>
    <button id="new-note">新建笔记</button>
  </div>
  <div id="note-editor">
    <h2>编辑笔记</h2>
    <form>
      <div>
        <label for="note-title">标题:</label>
        <input type="text" id="note-title" name="note-title">
      </div>
      <div>
        <label for="note-body">内容:</label>
        <textarea id="note-body" name="note-body"></textarea>
      </div>
      <button type="submit">保存笔记</button>
    </form>
  </div>
</div>

CSS样式：

#notes-app {
  width: 600px;
  margin: 0 auto;
  text-align: center;
}
form {
  display: inline-block;
  text-align: left;
  margin-right: 10px;
}
label {
  display: block;
  margin-bottom: 5px;
}
input[type="text"], input[type="password"], textarea {
  width: 100%;
  padding: 5px;
  margin-bottom: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
}
button[type="submit"], #new-note {
  padding: 10px;
  background-color: #4caf50;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
button[type="submit"]:hover, #new-note:hover {
  background-color: #3e8e41;
}
#notes {
  list-style: none;
  margin: 0;
  padding: 0;
}
#notes li {
  margin-bottom: 10px;
}

JS代码：

var notes = [
  {title: "笔记1", body: "这是笔记1的内容。"},
  {title: "笔记2", body: "这是笔记2的内容。"},
  {title: "笔记3", body: "这是笔记3的内容。"}
];
var currentUser = null;

function displayNotes() {
  var notesList = document.getElementById("notes");
  notesList.innerHTML = "";
  for (var i = 0; i < notes.length; i++) {
    var noteElement = document.createElement("li");
    var noteLink = document.createElement("a");
    noteLink.href = "#";
    noteLink.innerHTML = notes[i].title;
    noteLink.addEventListener("click", function(event) {
      event.preventDefault();
      var noteIndex = Array.prototype.indexOf.call(notesList.children, event.target.parentNode);
      displayNoteEditor(noteIndex);
    });
    noteElement.appendChild(noteLink);
    notesList.appendChild(noteElement);
  }
}

function displayLoginForm() {
  document.getElementById("login-form").style.display = "block";
  document.getElementById("register-form").style.display = "none";
  document.getElementById("notes-list").style.display = "none";
  document.getElementById("note-editor").style.display = "none";
}

function displayRegisterForm() {
  document.getElementById("login-form").style.display = "none";
  document.getElementById("register-form").style.display = "block";
  document.getElementById("notes-list").style.display = "none";
  document.getElementById("note-editor").style.display = "none";
}

function displayNotesList() {
  document.getElementById("login-form").style.display = "none";
  document.getElementById("register-form").style.display = "none";
  document.getElementById("notes-list").style.display = "block";
  document.getElementById("note-editor").style.display = "none";
  displayNotes();
}

function displayNoteEditor(noteIndex) {
  document.getElementById("login-form").style.display = "none";
  document.getElementById("register-form").style.display = "none";
  document.getElementById("notes-list").style.display = "none";
  document.getElementById("note-editor").style.display = "block";
  if (noteIndex === undefined) {
    document.getElementById("note-title").value = "";
    document.getElementById("note-body").value = "";
  } else {
    document.getElementById("note-title").value = notes[noteIndex].title;
    document.getElementById("note-body").value = notes[noteIndex].body;
  }
}

function login(event) {
  event.preventDefault();
  var username = document.getElementById("username").value;
  var password = document.getElementById("password").value;
  // TODO: 登录逻辑
  currentUser = username;
  displayNotesList();
}

function register(event) {
  event.preventDefault();
  var username = document.getElementById("new-username").value;
  var password = document.getElementById("new-password").value;
  // TODO: 注册逻辑
  currentUser = username;
  displayNotesList();
}

function saveNote(event) {
  event.preventDefault();
  var noteTitle = document.getElementById("note-title").value;
  var noteBody = document.getElementById("note-body").value;
  if (noteTitle === "" || noteBody === "") {
    alert("标题和内容都不能为空！");
    return;
  }
  var noteIndex = notes.findIndex(function(note) {
    return note.title === noteTitle;
  });
  if (noteIndex === -1) {
    notes.push({title: noteTitle, body: noteBody});
  } else {
    notes[noteIndex].body = noteBody;
  }
  displayNotes();
  displayNotesList();
}

displayLoginForm();
document.getElementById("login-form").addEventListener("submit", login);
document.getElementById("register-form").addEventListener("submit", register);
document.getElementById("new-note").addEventListener("click", function() {
  displayNoteEditor();
});
document.getElementById("note-editor").addEventListener("submit", saveNote);

3. 在线课程应用
这个应用程序旨在允许学生在线学习课程。
它将包含以下内容：
- 课程列表
- 课程详情
- 课程评论

HTML结构：

<div id="courses-app">
  <div id="course-list">
    <h2>可用课程</h2>
    <ul>
      <li><a href="#" data-id="1">课程1</a></li>
      <li><a href="#" data-id="2">课程2</a></li>
      <li><a href="#" data-id="3">课程3</a></li>
    </ul>
  </div>
  <div id="course-details">
    <h2 id="course-title">课程1</h2>
    <p id="course-description">这是课程1的描述。</p>
    <ul id="course-comments">
      <li>评论1</li>
      <li>评论2</li>
      <li>评论3</li>
    </ul>
    <form id="comment-form">
      <div>
        <label for="comment">发表评论:</label>
        <input type="text" id="comment" name="comment">
      </div>
      <button type="submit">提交评论</button>
    </form>
  </div>
</div>

CSS样式：

#courses-app {
  width: 600px;
  margin: 0 auto;
  text-align: center;
}
#course-list, #course-details {
  display: inline-block;
  vertical-align: top;
  text-align: left;
  margin-right: 20px;
}
#course-list li {
  margin-bottom: 10px;
}
#course-details h2 {
  margin-bottom: 10px;
}
#course-details p {
  margin-bottom: 20px;
}
#course-details ul {
  list-style: none;
  padding: 0;
  margin: 0;
  margin-bottom: 20px;
}
#course-details ul li {
  margin-bottom: 10px;
}
#comment-form label {
  display: block;
  margin-bottom: 5px;
}
#comment-form input[type="text"] {
  width: 100%;
  padding: 5px;
  margin-bottom: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
}
#comment-form button[type="submit"] {
  padding: 10px;
  background-color: #4caf50;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
#comment-form button[type="submit"]:hover {
  background-color: #3e8e41;
}

JS代码：

var courses = [
  {id: 1, title: "课程1", description: "这是课程1的描述。", comments: ["评论1", "评论2", "评论3"]},
  {id: 2, title: "课程2", description: "这是课程2的描述。", comments: ["评论4", "评论5", "评论6"]},
  {id: 3, title: "课程3", description: "这是课程3的描述。", comments: ["评论7", "评论8", "评论9"]}
];

function displayCourseList() {
  var courseList = document.getElementById("course-list").getElementsByTagName("ul")[0];
  courseList.innerHTML = "";
  for (var i = 0; i < courses.length; i++) {
    var courseElement = document.createElement("li");
    var courseLink = document.createElement("a");
    courseLink.href = "#";
    courseLink.dataset.id = courses[i].id;
    courseLink.innerHTML = courses[i].title;
    courseLink.addEventListener("click", function(event) {
      event.preventDefault();
      var courseId = event.target.dataset.id;
      displayCourseDetails(courseId);
    });
    courseElement.appendChild(courseLink);
    courseList.appendChild(courseElement);
  }
}

function displayCourseDetails(courseId) {
  var course = courses.find(function(course) {
    return course.id == courseId;
  });
  document.getElementById("course-title").innerHTML = course.title;
  document.getElementById("course-description").innerHTML = course.description;
  var commentsList = document.getElementById("course-comments");
  commentsList.innerHTML = "";
  for (var i = 0; i < course.comments.length; i++) {
    var commentElement = document.createElement("li");
    commentElement.innerHTML = course.comments[i];
    commentsList.appendChild(commentElement);
  }
}

function addComment(event) {
  event.preventDefault();
  var comment = document.getElementById("comment").value;
  if (comment === "") {
    alert("评论不能为空！");
    return;
  }
  var courseTitle = document.getElementById("course-title").innerHTML;
  var course = courses.find(function(course) {
    return course.title === courseTitle;
  });
  course.comments.push(comment);
  displayCourseDetails(course.id);
  document.getElementById("comment-form").reset();
}

displayCourseList();
document.getElementById("comment-form").addEventListener("submit", addComment);

4. 在线测试应用
这个应用程序旨在允许学生在线参加测试。
它将包含以下内容：
- 题目列表
- 选项列表
- 时间限制
- 得分板

HTML结构：

<div id="quiz-app">
  <h2>在线测试</h2>
  <div id="question-list">
    <div class="question">
      <h3>问题1</h3>
      <ul>
        <li><input type="radio" name="q1" value="a">选项A</li>
        <li><input type="radio" name="q1" value="b">选项B</li>
        <li><input type="radio" name="q1" value="c">选项C</li>
      </ul>
    </div>
    <div class="question">
      <h3>问题2</h3>
      <ul>
        <li><input type="radio" name="q2" value="a">选项A</li>
        <li><input type="radio" name="q2" value="b">选项B</li>
        <li><input type="radio" name="q2" value="c">选项C</li>
      </ul>
    </div>
    <div class="question">
      <h3>问题3</h3>
      <ul>
        <li><input type="radio" name="q3" value="a">选项A</li>
        <li><input type="radio" name="q3" value="b">选项B</li>
        <li><input type="radio"