我如何实现“目录"?我的测验代码? [英] how do I implement a "table of contents" for my quiz code?

问题描述

我有一个脚本来显示我的测验.一次显示一个问题，当您单击下一步时，旧问题消失，新问题消失.

I have a script to show my quiz. One question is shown at a time, and when you click next the old question fades out and the new question fades in.

我还制作了一个引用问题的表-该表是使用更多js生成的.我想这样做，以便当我单击等问题1"时，当前显示的问题淡出，问题1淡入(我在这里说淡入淡出，但实际上是可以立即看到的动画).如果我单击问题2"，除了出现问题2以外，都会发生相同的事情.此表的要点是，因此您可以使用该表浏览所有问题..

I also made a table that references the questions -- the table is generated with more js. I want to make it so that when I click on etc "Question 1", the current displayed question fades out and Question 1 fades in (I'm saying fade here but really the animation is instant as you can tell). If I click on "Question 2" the same thing occurs excepts Question 2 fades in. The point of this table is so you can navigate through all the questions using the table.

我意识到在这种情况下，上一个按钮"会更直观，但是出于各种原因，我不希望使用上一个按钮.

I realize that a "previous button" would be more intuitive in this case, but for various reasons I don't want a previous button.

这是我到目前为止的摘要:

Here's a snippet of what I have so far:

var totalQuestions = $('.questions').length;
var currentQuestion = 0;

var $questions = $('.questions');
$questions.hide();
$($questions[currentQuestion]).fadeIn(0);

$('#btn-next').click(function() {

  $($questions[currentQuestion]).fadeOut(0, function() {
    currentQuestion++;
    if (currentQuestion == totalQuestions) {
      //do something here
    } else {
      $($questions[currentQuestion]).fadeIn(0);
    }
  });
  tableControl(totalQuestions);
})

var tableControl = function(numberOfQuestions) {
  for (var i = 0; i < numberOfQuestions; i++) {
    $('#quiz-table').append(

      "<tr>" +
      "<td> <a> Question " + (i + 1) + " </a></td>" +

      "</tr>"

    );

  }
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
    <h1>Quiz 1</h1>
</div>
<div class="questions">
    <p>Question 1</p>
    <form class="options">
        <input class="option" type="radio">1<br>
        <input class="option" type="radio">2<br>
        <input class="option" type="radio">3<br>
        <input class="option" type="radio">4</br>
    </form>
</div>
<div class="questions">
    <p>Question 2</p>
    <form class="options">
        <input class="option" type="radio">1<br>
        <input class="option" type="radio">2<br>
        <input class="option" type="radio">3<br>
        <input class="option" type="radio">4</br>
    </form>
</div>
<div class="questions">
    <p>Question 3</p>
    <form class="options">
        <input class="option" type="radio">1<br>
        <input class="option" type="radio">2<br>
        <input class="option" type="radio">3<br>
        <input class="option" type="radio">4</br>
    </form>
</div>
<div class="questions">
    <p>Question 4</p>
    <form class="options">
        <input class="option" type="radio">1<br>
        <input class="option" type="radio">2<br>
        <input class="option" type="radio">3<br>
        <input class="option" type="radio">4</br>
    </form>
</div>
<input type="button" id='btn-next' value="Next">
<table id='quiz-table'>
  <tr>
    <th>Question</th>

  </tr>

</table>

推荐答案

您可以使用行索引来引用问题的索引

You can use the row index to reference index of question

$('#quiz-table').on('click', 'tr',function(){
    var rowIdx = $(this).index();
    // hide all, show the corresponding indexed one
    $('.questions').hide().eq(rowIdx-1).fadeIn();
});

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