如何僅經過CSS實現多行文本超長自動省略號

時間 2019-12-07

標籤如何經過 css 實現行文自動省略號欄目 CSS 简体版

原文原文鏈接

在CSS中，咱們能夠經過下面的樣式實現DIV元素中文本超長後自動截斷並以省略號結尾：

overflow: hidden;

word-break: normal;

text-overflow: ellipsis;

　　text-overflow: ellipsis是實現文本截斷後以省略號結尾的關鍵樣式，但問題是若是添加該樣式則DIV元素內的文本沒法自動換行，也就是說該效果只被容許在單行文本上實現。另外，word-break: normal能夠防止文字被部分截斷，這個在內容爲英文的狀況下顯得尤爲重要。

　　要實現多行文本自動截斷以省略號結尾的效果，一般的作法是使用JavaScript腳本。下面這些文章給出瞭如何經過腳本進行字符串截斷，不過僅限於英文環境。

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

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

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

　　使用純CSS樣式來實現該效果則會稍微有些麻煩，你須要懂得如何在CSS中進行hack。這裏是一個能夠在多個通用瀏覽器中實現該效果的例子:

複製代碼

<!DOCTYPE HTML>

<html>

<head>

<style>

html, body, p { margin: 0; padding: 0; font-family: sans-serif;}

.ellipsis {

overflow: hidden;

height: 200px;

line-height: 25px;

margin: 20px;

border: 5px solid #AAA; }

.ellipsis:before {

content:"";

float: left;

width: 5px; height: 200px; }

.ellipsis > *:first-child {

float: right;

width: 100%;

margin-left: -5px; }

.ellipsis:after {

content: "\02026";

box-sizing: content-box;

-webkit-box-sizing: content-box;

-moz-box-sizing: content-box;

float: right; position: relative;

top: -25px; left: 100%;

width: 3em; margin-left: -3em;

padding-right: 5px;

text-align: right;

background: -webkit-gradient(linear, left top, right top,

from(rgba(255, 255, 255, 0)), to(white), color-stop(50%, white));

background: -moz-linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white);

background: -o-linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white);

background: -ms-linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white);

background: linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white); }

</style>

</head>

<body>

<p>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.</p>

</div></div>

</body>

</html>

複製代碼

　　經過修改.ellipsis和.ellipsis:before樣式中height屬性的值來指定容器的高度。該樣式的實如今多個不一樣版本的瀏覽器下測試經過，注意若是你是在IE下查看則須要確保你的文檔模型必須是在標準模式下，即Document Mode必須是Standards。