<head>: <script type="text/javascript"> function showSpoiler(obj) { var inner = obj.parentNode.getElementsByTagName("div")[0]; if (inner.style.display == "none") inner.style.display = ""; else inner.style.display = "none"; } </script> 內文:
<div class="spoiler">
<input type="button" onclick="showSpoiler(this);" value="Show/Hide" />
<div class="inner" style="display:none;">
This is a spoiler!
</div>