文本超出单行省略和多行省略

在实际的项目中,由于文字内容的长度不确定性和页面布局的固定性,难免会出现文字内容超过div区域的情况,此时比较好的做法就是当文字超过限定的div宽度后自动以省略号(…)显示,这样,按照习惯,人们都会知道这儿有文字被省略了。省略又分为单行省略和多行省略。我们常用的是单行省略代码如下:

html代码:

	<div class="text1">
		这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话
	</div>
	<br/>
	<div class="text2">
		这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话
		这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话
		这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话这是一句话
	</div>

  css代码:

.text1{
		 300px;
		height: 25px;
		line-height: 25px;
		background-color: #ccc;
		overflow: hidden;
		text-overflow: ellipsis;
		white-space: nowrap;
	}

.text2{
300px;
height: 100px;
background-color: orange;
}

  效果:

那多行省略怎么做呢:

我找了一个jquery.dotdotdot.min.js插件,然后将超出文本的地方引用下面的js即可

$(function(){
			$('.text2').dotdotdot();
		})

  效果:

现贴上jquery.dotdotdot.min.js的js代码:

/*
 *	jQuery dotdotdot 1.8.3
 *
 *	Copyright (c) Fred Heusschen
 *	www.frebsite.nl
 *
 *	Plugin website:
 *	dotdotdot.frebsite.nl
 *
 *	Licensed under the MIT license.
 *	http://en.wikipedia.org/wiki/MIT_License
 */
!function(t,e){"use strict";function n(t,e,n){var r=t.children(),a=!1;t.empty();for(var i=0,d=r.length;i<d;i++){var l=r.eq(i);if(t.append(l),n&&t.append(n),o(t,e)){l.remove(),a=!0;break}n&&n.detach()}return a}function r(e,n,i,d,l){var s=!1,c="a, table, thead, tbody, tfoot, tr, col, colgroup, object, embed, param, ol, ul, dl, blockquote, select, optgroup, option, textarea, script, style",u="script, .dotdotdot-keep";return e.contents().detach().each(function(){var h=this,f=t(h);if("undefined"==typeof h)return!0;if(f.is(u))e.append(f);else{if(s)return!0;e.append(f),!l||f.is(d.after)||f.find(d.after).length||e[e.is(c)?"after":"append"](l),o(i,d)&&(s=3==h.nodeType?a(f,n,i,d,l):r(f,n,i,d,l)),s||l&&l.detach()}}),n.addClass("is-truncated"),s}function a(e,n,r,a,d){var c=e[0];if(!c)return!1;var h=s(c),f=h.indexOf(" ")!==-1?" ":" ",p="letter"==a.wrap?"":f,g=h.split(p),v=-1,w=-1,m=0,b=g.length-1;if(a.fallbackToLetter&&0===m&&0===b&&(p="",g=h.split(p),b=g.length-1),a.maxLength)h=i(h.trim().substr(0,a.maxLength),a),l(c,h);else{for(;m<=b&&(0!==m||0!==b);){var y=Math.floor((m+b)/2);if(y==w)break;w=y,l(c,g.slice(0,w+1).join(p)+a.ellipsis),r.children().each(function(){t(this).toggle().toggle()}),o(r,a)?(b=w,a.fallbackToLetter&&0===m&&0===b&&(p="",g=g[0].split(p),v=-1,w=-1,m=0,b=g.length-1)):(v=w,m=w)}if(v==-1||1===g.length&&0===g[0].length){var x=e.parent();e.detach();var C=d&&d.closest(x).length?d.length:0;if(x.contents().length>C?c=u(x.contents().eq(-1-C),n):(c=u(x,n,!0),C||x.detach()),c&&(h=i(s(c),a),l(c,h),C&&d)){var T=d.parent();t(c).parent().append(d),t.trim(T.html())||T.remove()}}else h=i(g.slice(0,v+1).join(p),a),l(c,h)}return!0}function o(t,e){return t.innerHeight()>e.maxHeight||e.maxLength&&t.text().trim().length>e.maxLength}function i(e,n){for(;t.inArray(e.slice(-1),n.lastCharacter.remove)>-1;)e=e.slice(0,-1);return t.inArray(e.slice(-1),n.lastCharacter.noEllipsis)<0&&(e+=n.ellipsis),e}function d(t){return{t.innerWidth(),height:t.innerHeight()}}function l(t,e){t.innerText?t.innerText=e:t.nodeValue?t.nodeValue=e:t.textContent&&(t.textContent=e)}function s(t){return t.innerText?t.innerText:t.nodeValue?t.nodeValue:t.textContent?t.textContent:""}function c(t){do t=t.previousSibling;while(t&&1!==t.nodeType&&3!==t.nodeType);return t}function u(e,n,r){var a,o=e&&e[0];if(o){if(!r){if(3===o.nodeType)return o;if(t.trim(e.text()))return u(e.contents().last(),n)}for(a=c(o);!a;){if(e=e.parent(),e.is(n)||!e.length)return!1;a=c(e[0])}if(a)return u(t(a),n)}return!1}function h(e,n){return!!e&&("string"==typeof e?(e=t(e,n),!!e.length&&e):!!e.jquery&&e)}function f(t){for(var e=t.innerHeight(),n=["paddingTop","paddingBottom"],r=0,a=n.length;r<a;r++){var o=parseInt(t.css(n[r]),10);isNaN(o)&&(o=0),e-=o}return e}if(!t.fn.dotdotdot){t.fn.dotdotdot=function(e){if(0===this.length)return t.fn.dotdotdot.debug('No element found for "'+this.selector+'".'),this;if(this.length>1)return this.each(function(){t(this).dotdotdot(e)});var a=this,i=a.contents();a.data("dotdotdot")&&a.trigger("destroy.dot"),a.data("dotdotdot-style",a.attr("style")||""),a.css("word-wrap","break-word"),"nowrap"===a.css("white-space")&&a.css("white-space","normal"),a.bind_events=function(){return a.bind("update.dot",function(e,d){switch(a.removeClass("is-truncated"),e.preventDefault(),e.stopPropagation(),typeof l.height){case"number":l.maxHeight=l.height;break;case"function":l.maxHeight=l.height.call(a[0]);break;default:l.maxHeight=f(a)}l.maxHeight+=l.tolerance,"undefined"!=typeof d&&(("string"==typeof d||"nodeType"in d&&1===d.nodeType)&&(d=t("<div />").append(d).contents()),d instanceof t&&(i=d)),g=a.wrapInner('<div class="dotdotdot" />').children(),g.contents().detach().end().append(i.clone(!0)).find("br").replaceWith("  <br />  ").end().css({height:"auto","auto",border:"none",padding:0,margin:0});var c=!1,u=!1;return s.afterElement&&(c=s.afterElement.clone(!0),c.show(),s.afterElement.detach()),o(g,l)&&(u="children"==l.wrap?n(g,l,c):r(g,a,g,l,c)),g.replaceWith(g.contents()),g=null,t.isFunction(l.callback)&&l.callback.call(a[0],u,i),s.isTruncated=u,u}).bind("isTruncated.dot",function(t,e){return t.preventDefault(),t.stopPropagation(),"function"==typeof e&&e.call(a[0],s.isTruncated),s.isTruncated}).bind("originalContent.dot",function(t,e){return t.preventDefault(),t.stopPropagation(),"function"==typeof e&&e.call(a[0],i),i}).bind("destroy.dot",function(t){t.preventDefault(),t.stopPropagation(),a.unwatch().unbind_events().contents().detach().end().append(i).attr("style",a.data("dotdotdot-style")||"").removeClass("is-truncated").data("dotdotdot",!1)}),a},a.unbind_events=function(){return a.unbind(".dot"),a},a.watch=function(){if(a.unwatch(),"window"==l.watch){var e=t(window),n=e.width(),r=e.height();e.bind("resize.dot"+s.dotId,function(){n==e.width()&&r==e.height()&&l.windowResizeFix||(n=e.width(),r=e.height(),u&&clearInterval(u),u=setTimeout(function(){a.trigger("update.dot")},100))})}else c=d(a),u=setInterval(function(){if(a.is(":visible")){var t=d(a);c.width==t.width&&c.height==t.height||(a.trigger("update.dot"),c=t)}},500);return a},a.unwatch=function(){return t(window).unbind("resize.dot"+s.dotId),u&&clearInterval(u),a};var l=t.extend(!0,{},t.fn.dotdotdot.defaults,e),s={},c={},u=null,g=null;return l.lastCharacter.remove instanceof Array||(l.lastCharacter.remove=t.fn.dotdotdot.defaultArrays.lastCharacter.remove),l.lastCharacter.noEllipsis instanceof Array||(l.lastCharacter.noEllipsis=t.fn.dotdotdot.defaultArrays.lastCharacter.noEllipsis),s.afterElement=h(l.after,a),s.isTruncated=!1,s.dotId=p++,a.data("dotdotdot",!0).bind_events().trigger("update.dot"),l.watch&&a.watch(),a},t.fn.dotdotdot.defaults={ellipsis:"... ",wrap:"word",fallbackToLetter:!0,lastCharacter:{},tolerance:0,callback:null,after:null,height:null,watch:!1,windowResizeFix:!0,maxLength:null},t.fn.dotdotdot.defaultArrays={lastCharacter:{remove:[" "," ",",",";",".","!","?"],noEllipsis:[]}},t.fn.dotdotdot.debug=function(t){};var p=1,g=t.fn.html;t.fn.html=function(n){return n!=e&&!t.isFunction(n)&&this.data("dotdotdot")?this.trigger("update",[n]):g.apply(this,arguments)};var v=t.fn.text;t.fn.text=function(n){return n!=e&&!t.isFunction(n)&&this.data("dotdotdot")?(n=t("<div />").text(n).html(),this.trigger("update",[n])):v.apply(this,arguments)}}}(jQuery),jQuery(document).ready(function(t){t(".dot-ellipsis").each(function(){var e=t(this).hasClass("dot-resize-update"),n=t(this).hasClass("dot-timer-update"),r=0,a=t(this).attr("class").split(/\s+/);t.each(a,function(t,e){var n=e.match(/^dot-height-(\d+)$/);null!==n&&(r=Number(n[1]))});var o={};n&&(o.watch=!0),e&&(o.watch="window"),r>0&&(o.height=r),t(this).dotdotdot(o)})}),jQuery(window).on("load",function(){jQuery(".dot-ellipsis.dot-load-update").trigger("update.dot")});

  

原文地址:https://www.cnblogs.com/lfhy/p/6782607.html