通过纯CSS样式实现DIV元素中多行文本超长自动省略号

在CSS中，我们可以通过下面的样式实现DIV元素中文本超长后自动截断并以省略号结尾：

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代码如下:

overflow: hidden;
word-break: normal;
text-overflow: ellipsis;

text-overflow: ellipsis是实现文本截断后以省略号结尾的关键样式，但问题是如果添加该样式则DIV元素内的文本无法自动换行，也就是说该效果只被允许在单行文本上实现。另外，word-break: normal可以防止文字被部分截断，这个在内容为英文的情况下显得尤其重要。

要实现多行文本自动截断以省略号结尾的效果，通常的做法是使用JavaScript脚本。下面这些文章给出了如何通过脚本进行字符串截断，不过仅限于英文环境。

http://www.barelyfitz.com/projects/truncate/

http://www.javascriptsource.com/miscellaneous/truncate-text.html

http://www.javascriptbank.com/truncate-html-text.html/en/

使用纯CSS样式来实现该效果则会稍微有些麻烦，你需要懂得如何在CSS中进行hack。这里是一个可以在多个通用浏览器中实现该效果的例子:

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代码如下:

Call me Ishmael. Some years ago – never mind how long precisely – having little or no money in my purse, and nothing particular to interest me on shore, I thought I would sail about a little and see the watery part of the world. It is a way I have of driving off the spleen, and regulating the circulation. Whenever I find myself growing grim about the mouth; whenever it is a damp, drizzly November in my soul; whenever I find myself involuntarily pausing before coffin warehouses, and bringing up the rear of every funeral I meet; and especially whenever my hypos get such an upper hand of me, that it requires a strong moral principle to prevent me from deliberately stepping into the street, and methodically knocking people's hats off – then, I account it high time to get to sea as soon as I can.

通过修改.ellipsis和.ellipsis:before样式中height属性的值来指定容器的高度。该样式的实现在多个不同版本的浏览器下测试通过，注意如果你是在IE下查看则需要确保你的文档模型必须是在标准模式下，即Document Mode必须是Standards。