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代码编辑器：
<!DOCTYPE html> <meta charset="utf-8"> <link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> <style> div.test { white-space:nowrap; width:12em; overflow:hidden; border:1px solid #000000; } div.test:hover { text-overflow:inherit; overflow:visible; } </style> <p>鼠标移动到框内，查看效果t.</p> <div class="test" style="text-overflow:ellipsis;">This is some long text that will not fit in the box</div> <br> <div class="test" style="text-overflow:clip;">This is some long text that will not fit in the box</div> <footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果：