这是一个静态网站可能用到的功能，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，展示如下：

————–代码————–
JAVASCRIPT代码部分

<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>

 HTML代码部分

 <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>