(若为英文则作用于第一个字母,若为中文则作用于第一个汉字) 属性选择器(Attribute Selectors ):通过判断元素中是否存在html中某个属性或者符合某个属性值来选择作用该元素。
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Disallow unqualified attribute selectors 禁用不规则的属性选择器
As you start to use attribute selectors more and more, you'll end up working with values (from attributes) as much as you work with nodes.
随着越来越多的使用属性选择器,最终将与处理节点一样经常地使用值(来自属性)。
A simple selector is either a type selector or universal selector followed immediately by zero or more attribute selectors, ID selectors, or pseudo-classes, in any order.
一个简单选择符或者是一个类型选择符,或者是一个全局选择符,紧跟在后的是零个或多个属性选择符,ID选择符或伪类,次序任意。
The selector in the following rule, which combines descendant and attribute selectors, matches any element that (1) has the "href" attribute set and (2) is inside a P that is itself inside a DIV
下面规则中的选择符结合了派生选择符和属性选择符,它匹配任何元素,如果(1)该元素设置了"href"属性;且(2)包含在一个P元素内,而P元素又包含在一个DIV元素内
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