CodePen

HTML

            
              <h1>Line Clampin'</h1>

<h2>Weird WebKit Flexbox Way</h2>
<div class="module line-clamp">
  <p>Pellentesque habitant 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>
</div>

<h2>Fade Out Way</h2>
<div class="module fade">
  <p>Pellentesque habitant 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>
</div>

<h2>Opera Overflow Way</h2>
<div class="module last-line">
  <p>Pellentesque habitant 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>
</div>

<h2>Clamp.js Way</h2>
<div class="module js">
  <p id="clampjs">Pellentesque habitant 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>
</div>

<h2>ftellipsis Way</h2>
<div class="module js ftellipsis" id="ftellipsis">
  <p>Pellentesque habitant 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>
</div>

<h2>TextOverflowClamp.js Way</h2>
<div class="module js textoverflowclamp" id="textoverflowclamp">
  <p>Pellentesque habitant 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>
</div>


            
          
!

CSS

            
              @import url(http://fonts.googleapis.com/css?family=Open+Sans);

body {
  padding: 20px;
  font: 1.2em/1.2em 'Open Sans', sans-serif;
}
.module {
  width: 250px;
  margin: 0 0 1em 0;
  overflow: hidden;
}
.module p {
  margin: 0;
}

.line-clamp {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;  
}

.fade {
  position: relative;
  height: 3.6em; /* exactly three lines */
}
.fade:after {
  content: "";
  text-align: right;
  position: absolute;
  bottom: 0;
  right: 0;
  width: 70%;
  height: 1.2em;
  background: linear-gradient(to right, rgba(255, 255, 255, 0), rgba(255, 255, 255, 1) 50%);
}

.last-line {
  height: 3.6em; /* exactly three lines */
  text-overflow: -o-ellipsis-lastline;
}

.ftellipsis {
  height: 3.6em;
}

h1 {
  margin: 0 0 1em 0;
}
h2 {
  font-size: 1.2em;
}
            
          
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JS

            
              // https://github.com/josephschmitt/Clamp.js
var module = document.getElementById("clampjs");
$clamp(module, {clamp: 3});




// https://github.com/ftlabs/ftellipsis
var element = document.getElementById('ftellipsis');
var ellipsis = new Ellipsis(element);

ellipsis.calc();
ellipsis.set();






// http://codepen.io/Merri/pen/Dsuim
/**
  * TextOverflowClamp.js
  *
  * Updated 2013-05-09 to remove jQuery dependancy.
  * But be careful with webfonts!
  */

// bind function support for older browsers without it
// https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Function/bind
if (!Function.prototype.bind) {
  Function.prototype.bind = function (oThis) {
    if (typeof this !== "function") {
      // closest thing possible to the ECMAScript 5 internal IsCallable function
      throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable");
    }
 
    var aArgs = Array.prototype.slice.call(arguments, 1),
        fToBind = this,
        fNOP = function () {},
        fBound = function () {
          return fToBind.apply(this instanceof fNOP && oThis
                                 ? this
                                 : oThis,
                               aArgs.concat(Array.prototype.slice.call(arguments)));
        };
 
    fNOP.prototype = this.prototype;
    fBound.prototype = new fNOP();
 
    return fBound;
  };
}

// the actual meat is here
(function(w, d){
	var clamp, measure, text, lineWidth,
		lineStart, lineCount, wordStart,
		line, lineText, wasNewLine,
    ce = d.createElement.bind(d),
    ctn = d.createTextNode.bind(d);
	
	// measurement element is made a child of the clamped element to get it's style
	measure = ce('span');
  
	(function(s){
		s.position = 'absolute'; // prevent page reflow
		s.whiteSpace = 'pre'; // cross-browser width results
		s.visibility = 'hidden'; // prevent drawing
	})(measure.style);
	
	clamp = function (el, lineClamp) {
    // make sure the element belongs to the document
    if(!el.ownerDocument || !el.ownerDocument === d) return;
		// reset to safe starting values
		lineStart = wordStart = 0;
		lineCount = 1;
		wasNewLine = false; 
		lineWidth = el.clientWidth;
		// get all the text, remove any line changes
		text = (el.textContent || el.innerText).replace(/\n/g, ' ');
		// remove all content
		while(el.firstChild !== null)
			el.removeChild(el.firstChild);
		// add measurement element within so it inherits styles
		el.appendChild(measure);
		// http://ejohn.org/blog/search-and-dont-replace/
		text.replace(/ /g, function(m, pos) {
			// ignore any further processing if we have total lines
      if(lineCount === lineClamp) return;
			// create a text node and place it in the measurement element
			measure.appendChild(ctn(text.substr(lineStart, pos - lineStart)));
			// have we exceeded allowed line width?
			if(lineWidth < measure.clientWidth) {
				if(wasNewLine) {
					// we have a long word so it gets a line of it's own
					lineText = text.substr(lineStart, pos + 1 - lineStart);
					// next line start position
					lineStart = pos + 1;
				} else {
					// grab the text until this word
					lineText = text.substr(lineStart, wordStart - lineStart);
					// next line start position
					lineStart = wordStart;
				}
				// create a line element
				line = ce('span');
				// add text to the line element
				line.appendChild(ctn(lineText));
				// add the line element to the container
				el.appendChild(line);
				// yes, we created a new line
				wasNewLine = true;
        lineCount++;
			} else {
				// did not create a new line
				wasNewLine = false;
			}
			// remember last word start position
			wordStart = pos + 1;
			// clear measurement element
			measure.removeChild(measure.firstChild);
		});
		// remove the measurement element from the container
		el.removeChild(measure);
		// create the last line element
		line = ce('span');
		// give styles required for text-overflow to kick in
		(function(s){
			s.display = 'inline-block';
			s.overflow = 'hidden';
			s.textOverflow = 'ellipsis';
			s.whiteSpace = 'nowrap';
			s.width = '100%';
		})(line.style);
		// add all remaining text to the line element
		line.appendChild(ctn(text.substr(lineStart)));
		// add the line element to the container
		el.appendChild(line);
	}
	w.clamp = clamp;
})(window, document);

// the only bit of jQuery
$(window).bind('load', function() {
  clamp(document.getElementById('textoverflowclamp'), 3);
});
            
          
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