<div id="post_body" class="blogpost-body "> <textarea id="con" style="height: 98px; width: 205px; margin: 2px;"><script type="text/javascript"> alert("插入HTML代码"); </script></textarea> <input id="btn" type="button" value="运行代码" />
原文：https://www.cnblogs.com/ys88/p/12501287.html