CSS: pseudo-classes and pseudo-elements 1.Definition: pseudo-classes The pseudo-class concept is introduced to permit selection based on information that lies outside of the document tree or that cannot be expressed using the other simple selectors. In Chinese:引入伪类概念是为了允许基于文档树之外的...
CSS 之pseudo-classes 与pseudo-element的异同 从W3School找到相关资料如下: 伪类: 伪类存在的意义是为了通过选择器找到那些不存在与DOM树中的信息以及不能被常规CSS选择器获取到的信息。 伪类由一个冒号:开头,冒号后面是伪类的名称和包含在圆括号中的可选参数。 任何常规选择器可以再任何位置使用伪类。伪类语法不区别...
CSS伪类是用来添加一些选择器的特殊效果。 语法 伪类的语法: selector : pseudo - class { property : value ;} 复制 CSS类也可以使用伪类: selector . class : pseudo - class { property : value ;} 复制 anchor伪
在下面的示例中class="red",带有的链接将显示为红色。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 <!DOCTYPEhtml>使用带有选择器的CSS伪类示例a.red:link{color:#ff0000;}Click meClick me 四、总结 本文基于CSS基础,介绍了CSS中的伪类,从什么是伪类,常见的伪类的用法( first-child,: last-seudo,:...
This is used to style specified parts of an element. Syntax: – selector::pseudo-element { property:value; } Ex: – p::first-letter { color: red; } ::first-letter ::first-line ::selection ::before ::after ::first-letter- This is used to add a style to the first letter of the...
css05 CSS Pseudo-classes What are Pseudo-classes? A pseudo-class is used to define a special state of an element. For example, it can be used to: Style an element when a user mouses over it Style visited and unvisited links differently...
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CSS伪类是用来添加一些选择器的特殊效果。语法伪类的语法:selector:pseudo-class {property:value;}尝试一下 »C
伪类可以与CSS类结合使用。 在下面的示例中class="red",带有的链接将显示为红色。 <!DOCTYPE html>使用带有选择器的CSS伪类示例a.red:link{color:#ff0000;}Click meClick me 四、总结 本文基于CSS基础,介绍了CSS中的伪类,从什么是伪类,常见的伪类的用法( first-child,: last-seudo,: nth-child,: lang)最...
s technical definition, a pseudo-class is basically a phantom state or specific characteristic of an element that can be targeted with CSS. A few common pseudo-classes are:link,:visited,:hover,:active,:first-childand:nth-child. There are more, and we’re going to see them all in a ...