For example, the following attribute selector matches all H1 elements that specify the "title" attribute, whatever its value.
例如,如下的属性选择符匹配那些指定了“ title ”属性的H1元素,而不论其值为什么?
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。
So the return value (sort of a misnomer, but still a useful way to think about things) for an attribute selector is a value; for an element, it's a node set (containing a single node).
因此对于属性选择器,返回值(虽然不确切但是很有用)是一个值,对于一个元素则是一个节点集(包含一个节点)。
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