Je ne sais pas si vous avez vu CECI , mais l'excellent CSS-Tricks.com de Chris Coyier a publié un lien vers ceci il y a quelque temps et c'est une solution CSS pure qui accomplit exactement ce que vous cherchez.
(Cliquez pour afficher sur CodePen)
HTML:
<div class="ellipsis">
<div>
<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>
CSS:
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-size: 100% 100%;/* 512x1 image,gradient for IE9. Transparent at 0% -> white at 50% -> white at 100%.*/
�background-image:url(data:image/png;base64,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);
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);
}
Bien sûr, être une solution CSS pure signifie que c'est aussi une solution assez compliquée, mais cela fonctionne proprement et élégamment. Je suppose que Javascript est hors de question car c'est beaucoup plus facile à réaliser (et sans doute plus dégradable) avec Javascript.
En prime, il y a un fichier zip téléchargeable du processus complet (si vous voulez le comprendre et tout), mais aussi un fichier mixin SASS afin que vous puissiez le plier dans votre processus easy-peasy.
J'espère que cela t'aides!
http://www.mobify.com/blog/multiline-ellipsis-in-pure-css/