使用伪类选择器来改变内容？
使用类选择器可以为同一类型的HTML元素定义不同的样式。
With the class selector you can define different styles for the same type of HTML element.
尽管使用CSS无疑可以限定整个标签的样式，但您可能会发现，对CSS和SVG使用类选择器会更好。
While you can certainly style an entire tag using CSS, you'll probably find that using class selectors is a better use of CSS and SVG.
“header”和“content”查看器的背景颜色、圆角半径、边框和透明度都在外部css文件example . css的类选择器中定义(见清单19)。
The background color, corner radius, and border and thickness styles of "header" and "content" viewers are defined in class selectors of the external CSS file: "example.css" (Listing 19).
当然，用这种展开的形式允许在类XPath选择器中编程完成任何计算——您能够用Scheme编写的任何东西。
Of course, playing with this expanded form allows programming arbitrary calculations inside an XPath-like selector — anything you can write in Scheme.
该选择器是具有样式属性的不同元素和类。
The selectors are the different elements and classes that have style properties.
可以看到，样式表规则使用ID、类和元素选择器匹配清单1的各部分内容。
You can see the rules using ID, class, and element selectors matching parts of Listing 1.
导出将使用缺省JMS函数选择器类。
The export will use the default JMS function selector class.
一个类称为函数选择器，另一个类称为数据绑定。
One class is called the function selector, and the other one is called data binding.
在前面的小节中，您学会了如何使用选择器根据类型或css类检索元素。
In the previous section, you also learned that you can use selectors to retrieve elements based on their type or CSS class.
为了实现这个RESTful服务，要实现一个函数选择器类，它根据HTTP方法返回目标函数名，这与第一种方法相同。
To implement this RESTful service, a function selector class will be implemented to return the target function name according to the HTTP methods, which is the same as Approach 1.
Adapter基类将Adapter特定的Record对象发送到函数选择器。
The Adapter base classes send the Adapter-specific Record object to the Function Selector.
为了实现这个RESTful服务，要实现一个函数选择器类，它根据HTTP方法的类型选择正确的服务函数并返回函数名。
To implement this RESTful service, a function selector class will be implemented for selecting a correct service function according to the type of HTTP method and returning the function name.
然后，选择RESTFunctionSelector 作为函数选择器类，见图26。
Then select RESTFunctionSelector for the function selector class as shown in Figure 26.
HFontPicker——一个类office的字体选择器挂件。
如果您检查wp _ styles_en . mthm中的缺省选择器，您将注意到大多数选择器都是完全限定的(它们同时包含XDIME元素和样式类)。
If you examine the default selectors within wp_styles_en.mthm, you will notice that most of the selectors are fully qualified (they include both XDIME element and style class).
这些选择器应当只由基类实现调用；故此，我们将其声明放进结构头文件而不是接口头文件中。
These selectors should only be called by a subclass implementation; therefore, we include their declarations into the representation file and not into the interface file.
用选择器类你可以将同一类型的HTML元素定义出不同的样式。
With the class selector you can define different styles for the same type of HTML element.
尽管同名的类方法和实例方法拥有相同的选择器，但它们可以有不同的参数类型和返回值类型。
Although identically named class methods and instance methods are represented by the same selector, they can have different parameter types and return types.
如果您的派生类有专用样式选择器或缓存样式值，则可以包含重写此方法的方案。
Scenarios for overriding this method might include if your derived class has a specialized style selector, or caches style values.
这些选择器应当只由基类实现调用；
These selectors should only be called by a subclass implementation;
这些选择器应当只由基类实现调用；
These selectors should only be called by a subclass implementation;
应用推荐