经过多次尝试，我终于用混合的js / css来处理多行和单行溢出。

CSS3代码:

.forcewrap { // single line ellipsis
  -ms-text-overflow: ellipsis;
  -o-text-overflow: ellipsis;
  text-overflow: ellipsis;
  overflow: hidden;
  -moz-binding: url( 'bindings.xml#ellipsis' );
  white-space: nowrap;
  display: block;
  max-width: 95%; // spare space for ellipsis
}

.forcewrap.multiline {
  line-height: 1.2em;  // my line spacing 
  max-height: 3.6em;   // 3 lines
  white-space: normal;
}

.manual-ellipsis:after {
  content: "\02026";      // '...'
  position: absolute;     // parent container must be position: relative
  right: 10px;            // typical padding around my text
  bottom: 10px;           // same reason as above
  padding-left: 5px;      // spare some space before ellipsis
  background-color: #fff; // hide text behind
}

我简单地检查js代码的溢出在divs，像这样:

function handleMultilineOverflow(div) {
    // get actual element that is overflowing, an anchor 'a' in my case
    var element = $(div).find('a'); 
    // don't know why but must get scrollHeight by jquery for anchors
    if ($(element).innerHeight() < $(element).prop('scrollHeight')) {
        $(element).addClass('manual-ellipsis');
    }
}

html中的用法示例:

<div class="towrap">
  <h4>
    <a class="forcewrap multiline" href="/some/ref">Very long text</a>
  </h4>
</div>

糟糕的CSS不支持跨浏览器多行夹紧，只有webkit似乎在推动它。

你可以尝试使用一个简单的Javascript省略号库，比如github上的Ellipsity，源代码非常干净和小，所以如果你确实需要做任何额外的改变，它应该很容易。

https://github.com/Xela101/Ellipsity

我只是在这个概念上玩了一下。基本上，如果你可以从你的最后一个字符中删除一个像素，这里是一个纯css和html的解决方案:

其工作方式是将一个div绝对定位在视口的可视区域之下。我们希望随着内容的增长，div向上偏移到可见区域。如果内容增长太多，我们的div将偏移过高，所以我们的内容可以增长的高度的上限。

HTML:

<div class="text-container">
  <span class="text-content">
    PUT YOUR TEXT HERE
    <div class="ellipsis">...</div> // You could even make this a pseudo-element
  </span>
</div>

CSS:

.text-container {
    position: relative;
    display: block;
    color: #838485;
    width: 24em;
    height: calc(2em + 5px); // This is the max height you want to show of the text. A little extra space is for characters that extend below the line like 'j'
    overflow: hidden;
    white-space: normal;
}

.text-content {
  word-break: break-all;
  position: relative;
  display: block;
  max-height: 3em;       // This prevents the ellipsis element from being offset too much. It should be 1 line height greater than the viewport 
}

.ellipsis {
  position: absolute;
  right: 0;
  top: calc(4em + 2px - 100%); // Offset grows inversely with content height. Initially extends below the viewport, as content grows it offsets up, and reaches a maximum due to max-height of the content
  text-align: left;
  background: white;
}

我已经在Chrome、FF、Safari和IE 11上进行了测试。

你可以在这里查看:http://codepen.io/puopg/pen/vKWJwK

你甚至可以用一些CSS魔术来缓解字符的突然切断。

编辑:我猜这强加的一件事是word-break: break-all，否则内容不会扩展到视口的最末端。：(

p { width:100%; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; background:#fff; position:absolute; } <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla sed dui felis. Vivamus vitae pharetra nisl, eget fringilla elit. Ut nec est sapien. Aliquam dignissim velit sed nunc imperdiet cursus. Proin arcu diam, tempus ac vehicula a, dictum quis nibh. Maecenas vitae quam ac mi venenatis vulputate. Suspendisse fermentum suscipit eros, ac ultricies leo sagittis quis. Nunc sollicitudin lorem eget eros eleifend facilisis. Quisque bibendum sem at bibendum suscipit. Nam id tellus mi. Mauris vestibulum, eros ac ultrices lacinia, justo est faucibus ipsum, sed sollicitudin sapien odio sed est. In massa ipsum, bibendum quis lorem et, volutpat ultricies nisi. Maecenas scelerisque sodales ipsum a hendreritLorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla sed dui felis. Vivamus vitae pharetra nisl, eget fringilla elit. Ut nec est sapien. Aliquam dignissim velit sed nunc imperdiet cursus. Proin arcu diam, tempus ac vehicula a, dictum quis nibh. Maecenas vitae quam ac mi venenatis vulputate. Suspendisse fermentum suscipit eros, ac ultricies leo sagittis quis. Nunc sollicitudin lorem eget eros eleifend facilisis. Quisque bibendum sem at bibendum suscipit. Nam id tellus mi. Mauris vestibulum, eros ac ultrices lacinia, justo est faucibus ipsum, sed sollicitudin sapien odio sed est. In massa ipsum, bibendum quis lorem et, volutpat ultricies nisi. Maecenas scelerisque sodales ipsum a hendrerit.</p>

<!DOCTYPE html>
<html>
<head>
    <style>
        /* styles for '...' */
        .block-with-text {
            width: 50px;
            height: 50px;
            /* hide text if it more than N lines  */
            overflow: hidden;
            /* for set '...' in absolute position */
            position: relative;
            /* use this value to count block height */
            line-height: 1.2em;
            /* max-height = line-height (1.2) * lines max number (3) */
            max-height: 3.6em;
            /* fix problem when last visible word doesn't adjoin right side  */
            text-align: justify;
            /* place for '...' */
            margin-right: -1em;
            padding-right: 1em;
        }
            /* create the ... */
            .block-with-text:before {
                /* points in the end */
                content: '...';
                /* absolute position */
                position: absolute;
                /* set position to right bottom corner of block */
                right: 0;
                bottom: 0;
            }
            /* hide ... if we have text, which is less than or equal to max lines */
            .block-with-text:after {
                /* points in the end */
                content: '';
                /* absolute position */
                position: absolute;
                /* set position to right bottom corner of text */
                right: 0;
                /* set width and height */
                width: 1em;
                height: 1em;
                margin-top: 0.2em;
                /* bg color = bg color under block */
                background: white;
            }
    </style>
</head>
<body>
    a
    <div class="block-with-text">g fdsfkjsndasdasd asd asd asdf asdf asdf asdfas dfa sdf asdflk jgnsdlfkgj nsldkfgjnsldkfjgn sldkfjgnls dkfjgns ldkfjgn sldkfjngl sdkfjngls dkfjnglsdfkjng lsdkfjgn sdfgsd</div>
    <p>This is a paragraph.</p>

</body>
</html>

经过多次尝试，我终于用混合的js / css来处理多行和单行溢出。

CSS3代码:

.forcewrap { // single line ellipsis
  -ms-text-overflow: ellipsis;
  -o-text-overflow: ellipsis;
  text-overflow: ellipsis;
  overflow: hidden;
  -moz-binding: url( 'bindings.xml#ellipsis' );
  white-space: nowrap;
  display: block;
  max-width: 95%; // spare space for ellipsis
}

.forcewrap.multiline {
  line-height: 1.2em;  // my line spacing 
  max-height: 3.6em;   // 3 lines
  white-space: normal;
}

.manual-ellipsis:after {
  content: "\02026";      // '...'
  position: absolute;     // parent container must be position: relative
  right: 10px;            // typical padding around my text
  bottom: 10px;           // same reason as above
  padding-left: 5px;      // spare some space before ellipsis
  background-color: #fff; // hide text behind
}

我简单地检查js代码的溢出在divs，像这样:

function handleMultilineOverflow(div) {
    // get actual element that is overflowing, an anchor 'a' in my case
    var element = $(div).find('a'); 
    // don't know why but must get scrollHeight by jquery for anchors
    if ($(element).innerHeight() < $(element).prop('scrollHeight')) {
        $(element).addClass('manual-ellipsis');
    }
}

html中的用法示例:

<div class="towrap">
  <h4>
    <a class="forcewrap multiline" href="/some/ref">Very long text</a>
  </h4>
</div>