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HomeWeb Front-endHTML TutorialFont字体小图标应用_html/css_WEB-ITnose

我们知道在页面上载入小图标有多种方式,比如我们使用比较多的是css sprite背景图片定位,就是将很多小图标集成到一张大图,然后使用CSS定位背景。还有一种比较现代的方式是使用font字体图标,它利用@font-face原理载入图标字体库,然后调用图标。

查看演示 下载源码

使用css sprite方式非常方便,可以有很多色彩缤纷的图标,而且兼容性好,但是缺点就是图标不能缩放,或者说缩放了会失真,另外维护也不方便,修改一个图标要对整张大图就行修改,并且定位像素需要借助PS等工具确定位置。而使用图标字体库越来越受开发者青睐,它的维护简单,而且对图标缩放自由,随时都可以展示高清的图标,可以添加阴影效果和动画效果,设置也非常方便,唯一差点的就是图标颜色比较单一,就是设置的时候只能设置一个图标为单一颜色。下面我们来看下如何使用font字体小图标。

HTML

目前市面上有很多字体图标库,有收费的也有免费使用的。常见的有 icomoon, Font-Awesome以及 Glyphicon Halflings,Glyphicon在bootstrap下使用时免费的。当然国内 阿里系也开放了自己的图标库。

本文讲解下使用icomoon字体库,我们可以在官网上选择喜欢的字体图标然后下载并部署到项目中,当然也可以自己制作图标然后上传到官网上。下载好的字体库,在一个fonts/的文件夹里。我们先布置好html结构:

<ul class="icons">	<li class="sp"><i class="icon-spades spades"></i> 黑桃K</li>	<li class="red"><i class="icon-file-picture"></i> 照片</li>	<li><i class="icon-tablet"></i> iPad</li>	<li><a href="#"><i class="icon-bubbles"></i> 评论</a></li></ul>

我们在上面的html代码中,给元素li里添加了,然后加上class属性,class值就对应了css文件里的字体图标样式了。

CSS

首先我们使用@font-face命名字体名称,以及加载的字体文件,需要加载多个字体文件以兼容各浏览器和系统。然后定义class含有icon的样式,注意其中使用了抗锯齿处理,就是图片放大的时候不会出现边缘锯齿现象,然后使用伪类,设置content即图标内容。

@font-face {    font-family: 'icomoon';    src:    url('../fonts/icomoon.eot?42vx6u'); /* IE9 兼容模式 */    src:    url('../fonts/icomoon.eot?42vx6u#iefix') format('embedded-opentype'),        url('../fonts/icomoon.ttf?42vx6u') format('truetype'),        url('../fonts/icomoon.woff?42vx6u') format('woff'),        url('../fonts/icomoon.svg?42vx6u#icomoon') format('svg');    font-weight: normal;    font-style: normal;}[class^="icon-"], [class*=" icon-"] {    font-family: 'icomoon' !important;    speak: none;    font-style: normal;    font-weight: normal;    font-variant: normal;    text-transform: none;    line-height: 1;    /* 抗锯齿处理 =========== */    -webkit-font-smoothing: antialiased;    -moz-osx-font-smoothing: grayscale;}.icon-spades:before {    content: "\e900";}.icon-file-picture:before {    content: "\e901";}.icon-tablet:before {    content: "\e902";}.icon-bubbles:before {    content: "\e903";}

然后,我们运行下html页面,是不是可以看到几个图标了,方便实用吧。

如果想给图标定义动画效果,可以使用css来实现。

.spinner{	-webkit-animation: spinner 1s infinite linear;	animation: spinner 1s infinite linear;}@-webkit-keyframes spinner{	0%{		-webkit-transform: rotate(0deg);		transform: rotate(0deg);	}	100%{		-webkit-transform: rotate(359deg);		transform: rotate(359deg);	}}

以上代码定义了图标旋转动画,我们可以结合js实现这样的效果:当鼠标滑上图标时展示图标旋转动画,当鼠标离开时,停止旋转动画。这个效果的代码大家可以参照demo中的源码。demo中我还加上了Font Awesome字体图标示例和Glyphicons字体图标示例,大家可以查看demo或下载源码了解。

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