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O'Reilly Platform
book
React学习手册
by
Alex Banks
,
Eve Porcello
December 2017
Intermediate to advanced
329 pages
6h 9m
Chinese
China Electric Power Press Ltd.
Content preview from
React学习手册
278
|
第
11
章
Redirect
组件允许开发人员将用户重定向到某个特定路由。
当正式上线的应用程序中的某些路由发生变化后,用户仍然可以通过旧的路由
访问旧的内容。这通常是由书签产生的。
Redirect
组件为我们提供了一种加载
适当内容的方式,即使用户是通过一个旧的书签访问网站的。
React Router
允许用户在应用程序内部任意位置合成
Route
组件,因为
HashRouter
是根
组件。现在可以通过层级结构的方式对我们的内容进行组织,方便用户浏览。
Router
参数
React Router
另外一个非常实用的特性是配置路由参数的能力。路由参数是可以从
URL
中获取参数值的变量。它们在数据驱动的
Web
应用程序中非常有用,特别是在内
容过滤和管理首选项显示方面。
添加颜色详情页面
让我们通过
React Router
添加每次可以选择和显示一种颜色,来对颜色管理器程序进
行改进。当用户单击和选择了一种颜色后,应用程序将会显示该颜色,以及它的标题
和十六进制颜色值(见图
11-6
)。
图
11
-
6
:颜色详情页面
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Publisher Resources
ISBN: 9787519814236