使用CSS3的appearance属性改变元素的外观_html/css_WEB-ITnose
大家都知道每个浏览器对HTML元素渲染都不一样,比如说“button”,在chrome和ff中,渲染出来的效果都是不尽相同的。这样一来就有 了今天这个思路,利用浏览器的对元素的默认渲染风格,我们可以使用“appearance”属性对任何元素的渲染风格改变,最简单的来说,我要把“a”链 接默认显示成“按钮”风格,那么我们可以使用“appearance”设置为“button”。
“appearance”功能听起来蛮大的,不过可惜的是,目前各个浏览器厂商各自为政,还无法达到统一的标准,至今天也只有两个内核的浏览器可以使用,其一是“webkit”,其二是“ff”的,也就是说在使用“appearances”时,需要加上各浏览器厂前缀。
appearance使用方法:
.elmClass{ -webkit-appearance: value; -moz-appearance: value; appearance: value;}
接下来我们一起来看个简单的实例:
<p class="lookLikeAButton">我是一个段落P元素 </p><p class="lookLikeAListbox">我是一个段落P元素 </p><p class="lookLikeAListitem">我是一个段落P元素 </p><p class="lookLikeASearchfield">我是一个段落P元素 </p><p class="lookLikeATextarea">我是一个段落P元素 </p><p class="lookLikeAMenulist">我是一个段落P元素</p>
接下来,使用“appearance”属性来改变上面“P”元素的风格:
/*看起来像个按钮,以按钮的风格渲染*/.lookLikeAButton{ -webkit-appearance:button; -moz-appearance:button;}/*看起来像个清单盒子,以listbox风格渲染*/.lookLikeAListbox{ -webkit-appearance:listbox; -moz-appearance:listbox;}/*看起来像个清单列表,以listitem风格渲染*/.lookLikeAListitem{ -webkit-appearance:listitem; -moz-appearance:listitem;}/*看起来像个搜索框,以searchfield风格渲染*/.lookLikeASearchfield{ -webkit-appearance:searchfield; -moz-appearance:searchfield;}/*看起来像个文本域,以textarea风格渲染*/.lookLikeATextarea{ -webkit-appearance:textarea; -moz-appearance:textarea;}/*看起来像个下接菜单,以menulist风格渲染*/.lookLikeAMenulist{ -webkit-appearance:menulist; -moz-appearance:menulist;}
经过“appearance”的属性值设置后,段落P的默认风格就被改变了,如图所示:
当然上面的属性只是“appearance”中的一部分,我搜集了一下webkit和Mozilla下的appearance给大家参考:
Webkit下的appearance属性值
checkboxradiopush-buttonsquare-buttonbuttonbutton-bevellistboxlistitemmenulistmenulist-buttonmenulist-textmenulist-textfieldscrollbarbutton-upscrollbarbutton-downscrollbarbutton-leftscrollbarbutton-rightscrollbartrack-horizontalscrollbartrack-verticalscrollbarthumb-horizontalscrollbarthumb-verticalscrollbargripper-horizontalscrollbargripper-verticalslider-horizontalslider-verticalsliderthumb-horizontalsliderthumb-verticalcaretsearchfieldsearchfield-decorationsearchfield-results-decorationsearchfield-results-buttonsearchfield-cancel-buttontextfieldtextarea
Mozilla下的appearance属性值
nonebuttoncheckboxcheckbox-containercheckbox-smalldialoglistboxmenuitemmenulistmenulist-buttonmenulist-textfieldmenupopupprogressbarradioradio-containerradio-smallresizerscrollbarscrollbarbutton-downscrollbarbutton-leftscrollbarbutton-rightscrollbarbutton-upscrollbartrack-horizontalscrollbartrack-verticalseparatorstatusbartabtab-left-edge Obsoletetabpanelstextfieldtextfield-multilinetoolbartoolbarbuttontoolbox-moz-mac-unified-toolbar-moz-win-borderless-glass-moz-win-browsertabbar-toolbox-moz-win-communications-toolbox-moz-win-glass-moz-win-media-toolboxtooltiptreeheadercelltreeheadersortarrowtreeitemtreetwistytreetwistyopentreeviewwindow
大家要是感兴趣的话可以看看下面的相关介绍:
Mozilla Docs for -moz-appearance
Trent Walton on Webkit Appearance
Shaun Inman on Disabling Inner Text Shadow of Text Inputs on iPad
CSS3 Spec
CSS property: -webkit-appearance
最后在提醒大家一回,目前在IE系列和Opera浏览器上不支持“appearance”,而且Safari也只有3.0版本以上支持, 而在Chrome和Firefox以及移动设置浏览器上得到较好的支持。如果大家对此感兴趣,自己可以私下一个下个尝试上面的属性值,给大家带来何种效 果。

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