在查看了W3规范的文本溢出后，我认为仅使用CSS是不可能的。省略号是一个新属性，所以它可能还没有得到太多的使用或反馈。

然而，这家伙似乎问了一个类似(或相同)的问题，有人能够提出一个很好的jQuery解决方案。您可以在这里演示解决方案:http://jsfiddle.net/MPkSF/

如果javascript不是一个选择，我认为你可能不走运…

我发现了一个javascript技巧，但你必须使用字符串的长度。假设你想要3行宽250px，你可以计算每行的长度。

//get the total character length.
//Haha this might vary if you have a text with lots of "i" vs "w"
var totalLength = (width / yourFontSize) * yourNumberOfLines

//then ellipsify
function shorten(text, totalLength) {
    var ret = text;
    if (ret.length > totalLength) {
        ret = ret.substr(0, totalLength-3) + "...";
    }
    return ret;
}

我一直在尝试，直到我成功地实现了接近这个的东西。但有几点需要注意:

It's not pure CSS; you have to add a few HTML elements. There's however no JavaScript required. The ellipsis is right-aligned on the last line. This means that if your text isn't right-aligned or justified, there may be a noticable gap between the last visible word and the ellipsis (depending on the length of the first hidden word). The space for the ellipsis is always reserved. This means that if the text fits in the box almost precisely, it may be unnecessarily truncated (the last word is hidden, although it technically wouldn't have to). Your text needs to have a fixed background color, since we're using colored rectangles to hide the ellipsis in cases where it's not needed.

我还应该注意，文本将在单词边界处断开，而不是字符边界处断开。这是有意为之(因为我认为这对较长的文本更好)，但因为它不同于text-overflow: ellipsis，所以我认为我应该提到它。

如果你可以接受这些警告，HTML看起来是这样的:

<div class="ellipsify">
    <div class="pre-dots"></div>
    <div class="dots">&hellip;</div>
    <!-- your text here -->
    <span class="hidedots1"></span>
    <div class="hidedots2"></div>
</div>

这是相应的CSS，以一个150像素宽的盒子为例，在白色背景上有三行文本。它假设你有一个CSS重置或类似的设置，在必要的地方将边距和填充设置为零。

/* the wrapper */
.ellipsify {
    font-size:12px;
    line-height:18px;
    height: 54px;       /* 3x line height */
    width: 150px;
    overflow: hidden;
    position: relative; /* so we're a positioning parent for the dot hiders */
    background: white;
}

/* Used to push down .dots. Can't use absolute positioning, since that
   would stop the floating. Can't use relative positioning, since that
   would cause floating in the wrong (namely: original) place. Can't 
   change height of #dots, since it would have the full width, and
   thus cause early wrapping on all lines. */
.pre-dots {
    float: right;
    height: 36px;  /* 2x line height (one less than visible lines) */
}

.dots {
    float: right; /* to make the text wrap around the dots */
    clear: right; /* to push us below (not next to) .pre-dots */
}

/* hides the dots if the text has *exactly* 3 lines */
.hidedots1 {
    background: white;
    width: 150px;
    height: 18px;       /* line height */
    position: absolute; /* otherwise, because of the width, it'll be wrapped */
}

/* hides the dots if the text has *less than* 3 lines */
.hidedots2 {
    background: white; 
    width: 150px;
    height: 54px;       /* 3x line height, to ensure hiding even if empty */
    position: absolute; /* ensures we're above the dots */
}

结果如下所示:

为了阐明它是如何工作的，下面是相同的图像，除了.hidedots1用红色突出显示，而.hidedots2用青色突出显示。当没有看不见的文本时，这些矩形隐藏了省略号:

在IE9, IE8(模拟)，Chrome, Firefox, Safari和Opera中测试。IE7不支持。

下面的链接为这个问题提供了一个纯HTML / CSS的解决方案。

浏览器支持-如文中所述:

到目前为止，我们已经在Safari 5.0, IE 9(必须在标准模式下)， Opera 12和Firefox 15。 旧的浏览器仍然可以很好地工作，作为布局的核心 是在正常定位，边距和填充属性。如果你的 平台较老(例如Firefox 3.6, IE 8)，您可以使用该方法，但 重做渐变作为一个独立的PNG图像或DirectX过滤器。

http://www.mobify.com/dev/multiline-ellipsis-in-pure-css

css:

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); }

html:

<div class="ellipsis">
    <div>
        <p>Call me Ishmael.  Some years ago &ndash; never mind how long precisely &ndash; 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 &ndash; then, I account it high time to get to sea as soon as I can.</p>  
    </div>
</div>

小提琴

(调整浏览器窗口大小进行测试)

基于-webkit-line-clamp的纯CSS方法:

@-webkit-keyframes ellipsis {/*for test*/ 0% { width: 622px } 50% { width: 311px } 100% { width: 622px } } .ellipsis { max-height: 40px;/* h*n */ overflow: hidden; background: #eee; -webkit-animation: ellipsis ease 5s infinite;/*for test*/ /** overflow: visible; /**/ } .ellipsis .content { position: relative; display: -webkit-box; -webkit-box-orient: vertical; -webkit-box-pack: center; font-size: 50px;/* w */ line-height: 20px;/* line-height h */ color: transparent; -webkit-line-clamp: 2;/* max row number n */ vertical-align: top; } .ellipsis .text { display: inline; vertical-align: top; font-size: 14px; color: #000; } .ellipsis .overlay { position: absolute; top: 0; left: 50%; width: 100%; height: 100%; overflow: hidden; /** overflow: visible; left: 0; background: rgba(0,0,0,.5); /**/ } .ellipsis .overlay:before { content: ""; display: block; float: left; width: 50%; height: 100%; /** background: lightgreen; /**/ } .ellipsis .placeholder { float: left; width: 50%; height: 40px;/* h*n */ /** background: lightblue; /**/ } .ellipsis .more { position: relative; top: -20px;/* -h */ left: -50px;/* -w */ float: left; color: #000; width: 50px;/* width of the .more w */ height: 20px;/* h */ font-size: 14px; /** top: 0; left: 0; background: orange; /**/ } <div class='ellipsis'> <div class='content'> <div class='text'>text text text text text text text text text text text text text text text text text text text text text </div> <div class='overlay'> <div class='placeholder'></div> <div class='more'>...more</div> </div> </div> </div>

这里有很多答案，但我需要的是:

CSS只 面向未来(与时间更加兼容) 不会把单词分开(只在空格上分开)

需要注意的是，它不为不支持-webkit-线夹规则的浏览器(目前是IE, Edge, Firefox)提供省略号，但它确实使用渐变淡出文本。

.clampMe { position: relative; height: 2.4em; overflow: hidden; } .clampMe:after { content: ""; text-align: right; position: absolute; bottom: 0; right: 0; width: 50%; height: 1.2em; /* Just use multiples of the line-height */ background: linear-gradient(to right, rgba(255, 255, 255, 0), rgba(255, 255, 255, 1) 80%); } /* Now add in code for the browsers that support -webkit-line-clamp and overwrite the non-supportive stuff */ @supports (-webkit-line-clamp: 2) { .clampMe { overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; } .clampMe:after { display: none; } } <p class="clampMe">There's a lot more text in here than what you'll ever see. Pellentesque habitant testalotish morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. Aenean ultricies mi vitae est. Mauris placerat eleifend leo.</p>

你可以在这个CodePen中看到它的运行，你也可以在这里看到Javascript版本(没有jQuery)。