JS：

var module = document.getElementById("clamp-this-module");  //获取其文本对象， 需要设置其width
$clamp(module, {clamp: 2});  //设置行数

需要导入champ.js（这里附上其js代码）：

/*!
* Clamp.js 0.5.1
*
* Copyright 2011-2013, Joseph Schmitt http://joe.sh
* Released under the WTFPL license
* http://sam.zoy.org/wtfpl/
*/
(function(){window.$clamp=function(c,d){function s(a,b){n.getComputedStyle||(n.getComputedStyle=function(a,b){this.el=a;this.getPropertyValue=function(b){var c=/(\-([a-z]){1})/g;"float"==b&&(b="styleFloat");c.test(b)&&(b=b.replace(c,function(a,b,c){return c.toUpperCase()}));return a.currentStyle&&a.currentStyle[b]?a.currentStyle[b]:null};return this});return n.getComputedStyle(a,null).getPropertyValue(b)}function t(a){a=a||c.clientHeight;var b=u(c);return Math.max(Math.floor(a/b),0)}function x(a){return u(c)*
    a}function u(a){var b=s(a,"line-height");"normal"==b&&(b=1.2*parseInt(s(a,"font-size")));return parseInt(b)}function l(a){if(a.lastChild.children&&0<a.lastChild.children.length)return l(Array.prototype.slice.call(a.children).pop());if(a.lastChild&&a.lastChild.nodeValue&&""!=a.lastChild.nodeValue&&a.lastChild.nodeValue!=b.truncationChar)return a.lastChild;a.lastChild.parentNode.removeChild(a.lastChild);return l(c)}function p(a,d){if(d){var e=a.nodeValue.replace(b.truncationChar,"");f||(h=0<k.length?
    k.shift():"",f=e.split(h));1<f.length?(q=f.pop(),r(a,f.join(h))):f=null;m&&(a.nodeValue=a.nodeValue.replace(b.truncationChar,""),c.innerHTML=a.nodeValue+" "+m.innerHTML+b.truncationChar);if(f){if(c.clientHeight<=d)if(0<=k.length&&""!=h)r(a,f.join(h)+h+q),f=null;else return c.innerHTML}else""==h&&(r(a,""),a=l(c),k=b.splitOnChars.slice(0),h=k[0],q=f=null);if(b.animate)setTimeout(function(){p(a,d)},!0===b.animate?10:b.animate);else return p(a,d)}}function r(a,c){a.nodeValue=c+b.truncationChar}d=d||{};
    var n=window,b={clamp:d.clamp||2,useNativeClamp:"undefined"!=typeof d.useNativeClamp?d.useNativeClamp:!0,splitOnChars:d.splitOnChars||[".","-","\u2013","\u2014"," "],animate:d.animate||!1,truncationChar:d.truncationChar||"\u2026",truncationHTML:d.truncationHTML},e=c.style,y=c.innerHTML,z="undefined"!=typeof c.style.webkitLineClamp,g=b.clamp,v=g.indexOf&&(-1<g.indexOf("px")||-1<g.indexOf("em")),m;b.truncationHTML&&(m=document.createElement("span"),m.innerHTML=b.truncationHTML);var k=b.splitOnChars.slice(0),
        h=k[0],f,q;"auto"==g?g=t():v&&(g=t(parseInt(g)));var w;z&&b.useNativeClamp?(e.overflow="hidden",e.textOverflow="ellipsis",e.webkitBoxOrient="vertical",e.display="-webkit-box",e.webkitLineClamp=g,v&&(e.height=b.clamp+"px")):(e=x(g),e<=c.clientHeight&&(w=p(l(c),e)));return{original:y,clamped:w}}})();