用于显示隐藏内容的demo

准备做一个小静态网站，其中要做一个答题的功能，类似于英语的完形填空，点显示答案按钮以后，可以显示答案在上面，由于还没学过javascript，这个小功能也得请教同学啦。展示如下：

<br>--------------代码--------------<br>
<script type="text/javascript">
    var hiddenOrShow = 0;
    function clickMe() {
        var div = document.getElementById('answerDiv');
        var button=document.getElementById('aButton');
        if (hiddenOrShow % 2 == 0) {
            div.style.display = "block";
            button.setAttribute("value", "Hide the answer");
        } else {
            div.style.display = "none";
            button.setAttribute("value", "Show the answer");
        }
        hiddenOrShow++;
    }
</script>

<a>click the button below and you can see the answer in the answer field</a>
<br />
<input id="aButton" type="button" value="Show the answer" onclick="clickMe()">
<br>
<div>
<ul>
    <li>What's my Name?</li>
    <li>
       <div>the answer is:</div>
       <div id="answerDiv" style="display: none"><a>Moper</a></div>
    </li>
</ul>
</div>

<br>--------------展示--------------<br>
<script type="text/javascript">
    var hiddenOrShow = 0;
    function clickMe() {
        var div = document.getElementById('answerDiv');
        var button=document.getElementById('aButton');
        if (hiddenOrShow % 2 == 0) {
            div.style.display = "block";
            button.setAttribute("value", "Hide the answer");
        } else {
            div.style.display = "none";
            button.setAttribute("value", "Show the answer");
        }
        hiddenOrShow++;
    }
</script>
<a>click the button below and you can see the answer in the answer field</a>
<br />
<input id="aButton" type="button" value="Show the answer" onclick="clickMe()">
<br>
<div>
<ul>
    <li>What's my Name?</li>
    <li>
       <div>the answer is:</div>
       <div id="answerDiv" style="display: none"><a>Moper</a></div>
    </li>
</ul>
</div>