Polish by review
This commit is contained in:
Yang Lin
parent
ba8503d9b1
commit
bf4e0c49ff
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@ -53,7 +53,7 @@ figure.image-display
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:marked
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Run the <live-example></live-example> for this part.
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运行这部分的<live-example>在线例子</live-example>。
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+ifDocsFor('ts|js')
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@ -62,7 +62,7 @@ figure.image-display
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:marked
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To see the URL changes in the browser address bar,
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pop out the preview window by clicking the blue 'X' button in the upper right corner:
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注意看浏览器地址栏中的URL变化，点击右上角的蓝色'X'按钮，弹出预览窗口。
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.l-main-section
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@ -101,10 +101,10 @@ block keep-app-running
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### Keep the app transpiling and running
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### 让应用代码保持转译和运行
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Open a terminal/console window and enter the following command to
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start the TypeScript compiler, start the server, and watch for changes:
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打开terminal/console窗口，运行下列命令启动TypeScript编译器，它会监视文件变更，并启动开发服务器：
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code-example(language="bash").
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@ -213,55 +213,55 @@ code-example(language="bash").
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* add the supporting `import` statements.
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* 添加支持性的`import`语句。
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* Create the file <span ngio-ex>app/app.component.ts</span>.
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* 创建一个名叫<span ngio-ex>app.component.ts</span>的新文件。
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* Define an <span if-docs="ts">exported</span> `AppComponent` class.
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* 定义一个<span if-docs="ts">导出的</span> ``AppComponent`类。
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* 定义一个<span if-docs="ts">导出的</span> `AppComponent`类。
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* Add an `@Component` !{_decorator} above the class with a `my-app` selector.
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* 在类的上方添加`@Component`元数据装饰器，装饰器中带有`my-app`选择器。
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* 在类的上方添加`@Component`元数据装饰器，装饰器中带有`my-app`选择器。
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* Move the following from `HeroesComponent` to `AppComponent`:
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* 将下面的项目从`HeroesComponent`移到`AppComponent`：
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* `title` class property
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* `title`类属性
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* `@Component` template `<h1>` element, which contains a binding to `title`
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* `@Component`模板中的`<h1>`标签，它包含了对`title`属性的绑定。
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* Add a `<my-heroes>` element to the app template just below the heading so we still see the heroes.
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*
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*
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在模板的标题下面添加`<my-heroes>`标签，以便我们仍能看到英雄列表。
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* Add `HeroesComponent` to the `!{_declsVsDirectives}` !{_array} of `!{_AppModuleVsAppComp}` so Angular recognizes the `<my-heroes>` tags.
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* 添加`HeroesComponent`组件到根模块的`declarations`数组中，以便Angular能认识`<my-heroes>`标签。
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* Add `HeroService` to the `providers` !{_array} of `!{_AppModuleVsAppComp}` because we'll need it in every other view.
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* 添加`HeroService`到`AppModule`的`providers`数组中，因为我们的每一个视图都需要它。
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* Remove `HeroService` from the `HeroesComponent` `providers` !{_array} since it has been promoted.
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* 从`HerosComponent`的`providers`数组中移除HeroService`，因为它被提到模块了。
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* Add the supporting `import` statements for `AppComponent`.
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* 导入`AppComponent`。
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* 导入`AppComponent`。
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Our first draft looks like this:
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我们的第一个草稿版就像这样：
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block app-comp-v1
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@ -310,25 +310,25 @@ block app-comp-v1
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We'll need the Angular *Router*.
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我们需要Angular*路由器*。
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block angular-router
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:marked
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The Angular router is an external, optional Angular NgModule called `RouterModule`.
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The router is a combination of multiple provided services (`RouterModule`),
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multiple directives (`RouterOutlet, RouterLink, RouterLinkActive`),
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and a configuration (`Routes`). We'll configure our routes first.
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Angular路由器是一个可选的外部Angular NgModule，名叫`RouterModule`。
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路由器包含了多种服务(`RouterModule`)、多种指令(`RouterOutlet, RouterLink, RouterLinkActive`)、
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和一套配置(`Routes`)。我们将先配置路由。
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:marked
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### Add the base tag
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### 设置base标签
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Open the `index.html` and add `<base href="/">` at the top of the `<head>` section.
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打开`index.html`并且在`<head>`区的顶部添加`<base href="/">`语句。
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+makeExcerpt('index.html', 'base-href')
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@ -344,24 +344,24 @@ a#configure-routes
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block router-config-intro
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:marked
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### Configure routes
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### 配置路由
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### 配置路由
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Our application doesn't have any routes yet.
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We'll start by creating a configuration for the application routes.
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本应用还没有路由。我们来为应用的路由新建一个配置。
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:marked
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*Routes* tell the router which views to display when a user clicks a link or
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pastes a URL into the browser address bar.
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pastes a URL into the browser address bar.
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*路由*告诉路由器，当用户点击链接或者把URL粘贴到浏览器地址栏时，应该显示哪个视图。
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Let's define our first route as a route to the heroes component:
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我们的第一个路由是指向`HeroesComponent`的。
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- var _file = _docsFor == 'dart' ? 'app.component.ts' : 'app.module.2.ts'
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+makeExcerpt('app/' + _file + ' (heroes route)', 'heroes')
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@ -376,9 +376,9 @@ block router-config-intro
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此刻我们只有一个路由定义，但别急，后面还会添加更多。
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This *route definition* has the following parts:
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*路由定义*包括几个部分：
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* **path**: the router matches this route's path to the URL in the browser address bar (`!{_routePathPrefix}/heroes`).
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* **path**: 路由器会用它来匹配浏览器地址栏中的地址（`!{_routePathPrefix}/heroes`）。
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@ -392,11 +392,11 @@ block router-config-intro
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Learn more about defining routes with `!{_RoutesVsAtRouteConfig}` in the [Routing](../guide/router.html) chapter.
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到[路由](../guide/router.html)章节学习更多关于使用`Routes`定义路由的知识。
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+ifDocsFor('ts|js')
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:marked
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### Make the router available
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### 让路由器可用
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We've setup the initial route configuration. Now we'll add it to our `AppModule`.
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@ -442,7 +442,7 @@ block router-config-intro
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We don't really expect users to paste a route URL into the address bar.
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We add an anchor tag to the template which, when clicked, triggers navigation to the `HeroesComponent`.
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我们当然不会真让用户往地址栏中粘贴路由的URL，而应该在模板中的什么地方添加一个链接标签。点击时，就会导航到`HeroesComponent`组件。
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我们当然不会真让用户往地址栏中粘贴路由的URL，而应该在模板中的什么地方添加一个锚标签。点击时，就会导航到`HeroesComponent`组件。
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The revised template looks like this:
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@ -455,12 +455,12 @@ block routerLink
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Notice the `routerLink` binding in the anchor tag.
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We bind the `RouterLink` directive (another of the `RouterModule` directives) to a string
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that tells the router where to navigate when the user clicks the link.
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注意，链接标签中的`[routerLink]`绑定。我们把`RouterLink`指令(`ROUTER_DIRECTIVES`中的另一个指令)绑定到一个字符串。它将告诉路由器，当用户点击这个链接时，应该导航到哪里。
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注意，锚标签中的`[routerLink]`绑定。我们把`RouterLink`指令(`ROUTER_DIRECTIVES`中的另一个指令)绑定到一个字符串。它将告诉路由器，当用户点击这个链接时，应该导航到哪里。
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Since our link is not dynamic, we define a *routing instruction* with a **one-time binding** to our route **path**.
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Looking back at the route configuration, we confirm that `'/heroes'` is the path of the route to the `HeroesComponent`.
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由于这个链接不是动态的，我们只要用**一次性绑定**的方式绑定到路由的**路径（path）**就行了。
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回来看路由配置表，我们清楚的看到，这个路径 —— `'/heroes'`就是指向`HeroesComponent`的那个路由的路径。
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@ -468,7 +468,7 @@ block routerLink
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:marked
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Learn more about dynamic router links and the *link parameters array*
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in the [Routing](../guide/router.html#link-parameters-array) chapter.
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参阅[路由](../guide/router.html#link-parameters-array)章学习更多动态路由器链接和*链接参数数组*的知识。
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:marked
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@ -544,15 +544,15 @@ block routerLink
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+ifDocsFor('ts|js')
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:marked
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Also import and add `DashboardComponent` to our `AppModule`'s `declarations`.
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还得把`DashboardComponent`添加到`AppModule`的`declarations`数组中。
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+makeExcerpt('app/app.module.ts', 'dashboard')
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:marked
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#### !{_redirectTo}
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#### 重定向
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We want the app to show the dashboard when it starts and
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@ -561,14 +561,14 @@ block routerLink
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我们希望在应用启动的时候就显示仪表盘，而且我们希望在浏览器的地址栏看到一个好看的URL，比如`/dashboard`。
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记住，浏览器启动时，在地址栏中使用的路径是`/`。
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block redirect-vs-use-as-default
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:marked
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We can use a redirect route to make this happen. Add the following
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to our array of route definitions:
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可以使用重定向路由来实现它。添加下面的内容到路由定义的数组中：
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+makeExcerpt('app/app.module.3.ts','redirect')
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.l-sub-section
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@ -579,13 +579,13 @@ block redirect-vs-use-as-default
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:marked
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#### Add navigation to the template
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#### 添加导航到模版中
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Finally, add a dashboard navigation link to the template, just above the *Heroes* link.
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最后，在模板上添加一个到仪表盘的导航链接，就放在*Heroes（英雄列表）*链接的上方。
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- var _vers = _docsFor == 'dart' ? '' : '.1'
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+makeExcerpt('app/app.component' + _vers + '.ts', 'template-v3')
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@ -614,7 +614,7 @@ block redirect-vs-use-as-default
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把元数据中的`template`属性替换为`templateUrl`属性，它将指向一个新的模板文件。
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Set the `moduleId` property to `module.id` for module-relative loading of the `templateUrl`.
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设置`moduleId`属性到`module.id`，相对模块加载`templateUrl`。
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+makeExcerpt('app/dashboard.component.ts', 'metadata')
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@ -631,7 +631,7 @@ block redirect-vs-use-as-default
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We added extra `<div>` elements to help with styling later in this chapter.
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我们又一次使用`*ngFor`来在英雄列表上迭代，并显示它们的名字。
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还添加了一个额外的`<div>`元素，来帮助稍后的美化工作。
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还添加了一个额外的`<div>`元素，来帮助稍后的美化工作。
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### Share the *HeroService*
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@ -754,7 +754,7 @@ code-example(language="html").
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Certainly not the last one; we can't embed an entire hero object in the URL! Nor would we want to.
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显然，在我们的任何一个路由场景中它都无法工作。
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特别是最后一个需求，我们无法将一个完整的hero对象嵌入到URL中！不过我们本来也不想这样。
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最后一种场景肯定不行，我们无法将一个完整的hero对象嵌入到URL中！不过我们本来也不想这样。
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### Parameterized route
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@ -773,7 +773,7 @@ code-example(format='').
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We need to represent that variable part of the route with a *parameter* (or *token*) that stands for the hero's `id`.
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URL中的`/detail/`部分是固定不变的，但结尾的数字`id`部分会随着英雄的不同而变化。
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我们要把路由中可变的那部分表示成一个*参数（parameter）*或*符号（token）*，代表英雄的`id`。
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我们要把路由中可变的那部分表示成一个*参数（parameter）*或*令牌（token）*，代表英雄的`id`。
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### Configure a Route with a Parameter
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.l-sub-section
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:marked
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Remember to import the hero detail component before creating this route.
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记得在创建这个路由前导入英雄详情组件。
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:marked
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We're finished with the application routes.
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我们已经完成了本应用的路由。
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我们已经完成了本应用中路由的配置。
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We won't add a `'Hero Detail'` link to the template because users
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@ -846,15 +846,15 @@ block route-params
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We will no longer receive the hero in a parent component property binding.
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The new `HeroDetailComponent` should take the `id` parameter from the `params` observable
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in the `ActivatedRoute` service and use the `HeroService` to fetch the hero with that `id`.
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我们不会再从父组件的属性绑定中接收英雄数据。
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新的`HeroDetailComponent`应该从`ActivatedRoute`服务的可观察对象`params`中取得`id`参数，并通过`HeroService`服务获取具有这个指定`id`的英雄数据。
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:marked
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First, add the requisite imports:
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首先，添加需要的导入项目：
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- var _vers = _docsFor == 'dart' ? '' : '.1'
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+makeExcerpt('app/hero-detail.component' + _vers + '.ts', 'added-imports', '')
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@ -862,7 +862,7 @@ block route-params
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:marked
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Let's have the `!{_ActivatedRoute}` service, the `HeroService` and the `Location` service injected
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into the constructor, saving their values in private fields:
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然后注入`!{_ActivatedRoute}`和`HeroService`服务到构造函数中，将它们的值保存到私有变量中：
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+makeExcerpt('app/hero-detail.component.ts (constructor)', 'ctor')
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@ -880,7 +880,7 @@ block ngOnInit
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extract the `id` parameter value from the `ActivatedRoute` service
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and use the `HeroService` to fetch the hero with that `id`.
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在`ngOnInit`生命周期钩子中，使用可观察对象`params`从`ActivatedRoute`服务中提取`id`参数，并且使用`HeroService`来获取具有这个`id`的英雄数据。
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在`ngOnInit`生命周期钩子中，我们从`ActivatedRoute`服务的可观察对象`params`中提取`id`参数，并且使用`HeroService`来获取具有这个`id`的英雄数据。
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+makeExcerpt('app/hero-detail.component.ts', 'ngOnInit')
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@ -888,10 +888,10 @@ block extract-id
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:marked
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Notice how we extract the `id` by calling the `forEach` method
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which will deliver our !{_array} of route parameters.
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注意我们提取`id`的方法：调用`forEach`方法，它会提供一个路由参数的数组。
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- var _str2int = _docsFor == 'dart' ? '<code>int.parse</code> static method' : 'JavaScript (+) operator'
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:marked
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The hero `id` is a number. Route parameters are *always strings*.
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So we convert the route parameter value to a number with the !{_str2int}.
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@ -934,7 +934,7 @@ block extract-id
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using the `Location` service we injected previously.
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现在用户可以点击`AppComponent`中的两个链接，或点击浏览器的“后退”按钮。
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我们来添加第三个选项：一个`goBack`方法，使用之前注入的`Location`服务实现浏览器的历史堆栈的后退。
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我们来添加第三个选项：一个`goBack`方法，它使用之前注入的`Location`服务，利用浏览器的历史堆栈，导航到上一步。
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|
||||
+makeExcerpt('app/hero-detail.component.ts', 'goBack')
|
||||
|
||||
|
|
@ -945,7 +945,7 @@ block extract-id
|
|||
Going back too far could take us out of the application.
|
||||
That's acceptable in a demo. We'd guard against it in a real application,
|
||||
perhaps with the [!{_CanDeactivateGuard}](../api/!{_CanDeactivateGuardUri}.html).
|
||||
|
||||
|
||||
回退太多步会跑出我们的应用。
|
||||
在Demo中，这算不上问题。但在真实的应用中，我们需要对此进行防范。
|
||||
也许你该用[!{_CanDeactivateGuard}](../api/!{_CanDeactivateGuardUri}.html).。
|
||||
|
|
@ -964,7 +964,7 @@ block extract-id
|
|||
|
||||
修改模板，添加这个按钮以提醒我们还要做更多的改进，
|
||||
并把模板移到独立的<span ngio-ex>hero-detail.component.html</span>文件中去。
|
||||
|
||||
|
||||
+makeExample('app/hero-detail.component.html')(format='.')
|
||||
|
||||
:marked
|
||||
|
|
@ -993,12 +993,12 @@ block extract-id
|
|||
When a user selects a hero in the dashboard, the app should navigate to the `HeroDetailComponent` to view and edit the selected hero.
|
||||
|
||||
当用户从仪表盘中选择了一位英雄时，本应用要导航到`HeroDetailComponent`以查看和编辑所选的英雄。
|
||||
|
||||
|
||||
Although the dashboard heroes are presented as button-like blocks, they should behave like anchor tags.
|
||||
When hovering over a hero block, the target URL should display in the browser status bar
|
||||
When hovering over a hero block, the target URL should display in the browser status bar
|
||||
and the user should be able to copy the link or open the hero detail view in a new tab.
|
||||
|
||||
虽然仪表盘英雄被显示为像按钮一样的方块，但是它们的行为应该像链接标签一样。
|
||||
虽然仪表盘英雄被显示为像按钮一样的方块，但是它们的行为应该像锚标签一样。
|
||||
当鼠标移动到一个英雄方块上时，目标URL应该显示在浏览器的状态条上，用户应该能拷贝链接或者在新的浏览器标签页中打开英雄详情视图。
|
||||
|
||||
To achieve this effect, reopen the `dashboard.component.html` and replace the repeated `<div *ngFor...>` tags
|
||||
|
|
@ -1018,7 +1018,7 @@ block extract-id
|
|||
destination routes, "/dashboard" and "/heroes".
|
||||
|
||||
[`AppComponent`模板](#router-links)中的顶级导航有一些路由器链接被设置固定的路径，例如"/dashboard" and "/heroes"。
|
||||
|
||||
|
||||
This time, we're binding to an expression containing a **link parameters !{_array}**.
|
||||
The !{_array} has two elements, the ***!{_pathVsName}*** of
|
||||
the destination route and a ***route parameter*** set to the value of the current hero's `id`.
|
||||
|
|
@ -1037,19 +1037,19 @@ block extract-id
|
|||
|
||||
:marked
|
||||
Refresh the browser and select a hero from the dashboard; the app should navigate directly to that hero’s details.
|
||||
|
||||
|
||||
刷新浏览器，并从仪表盘中选择一位英雄，应用就会直接导航到英雄的详情。
|
||||
|
||||
|
||||
.l-main-section
|
||||
:marked
|
||||
## Refactor routes to a _Routing Module_
|
||||
|
||||
## 重构路由为一个**路由模块**
|
||||
|
||||
Almost 20 lines of `AppModule` are devoted to configuring four routes.
|
||||
Most application have many more routes and they [add guard services](../guide/router.html#guards)
|
||||
to protect against unwanted or unauthorized navigations.
|
||||
Routing considerations could quickly dominate this module and obscure its primary purpose which is to
|
||||
Almost 20 lines of `AppModule` are devoted to configuring four routes.
|
||||
Most application have many more routes and they [add guard services](../guide/router.html#guards)
|
||||
to protect against unwanted or unauthorized navigations.
|
||||
Routing considerations could quickly dominate this module and obscure its primary purpose which is to
|
||||
establish key facts about the entire app for the Angular compiler.
|
||||
|
||||
`AppModule`中有将近20行代码是用来配置四个路由的。
|
||||
|
|
@ -1057,7 +1057,7 @@ block extract-id
|
|||
路由的配置可能迅速占领这个模块，并掩盖其主要目的，即为Angular编译器设置整个应用的关键配置。
|
||||
|
||||
We should refactor the routing configuration into its own class.
|
||||
What kind of class?
|
||||
What kind of class?
|
||||
The current `RouterModule.forRoot()` produces an Angular `ModuleWithProviders` which suggests that a
|
||||
class dedicated to routing should be some kind of module.
|
||||
It should be a [_Routing Module_](../guide/router.html#routing-module).
|
||||
|
|
@ -1067,11 +1067,11 @@ block extract-id
|
|||
当前的`RouterModule.forRoot()`产生一个Angular `ModuleWithProviders`，所以这个路由类应该是一种模块类。
|
||||
它应该是一个[**路由模块**](../guide/router.htm#routing-module)。
|
||||
|
||||
By convention the name of a _Routing Module_ contains the word "Routing" and
|
||||
By convention the name of a _Routing Module_ contains the word "Routing" and
|
||||
aligns with the name of the module that declares the components navigated to".
|
||||
|
||||
按约定，**路由模块**的名字应该包含“Routing”，并与导航到的组件所在的模块的名称看齐。
|
||||
|
||||
|
||||
Create an `app-routing.module.ts` file as a sibling to `app.module.ts`. Give it the following contents extracted from the `AppModule` class:
|
||||
|
||||
在`app.module.ts`所在目录创建`app-routing.module.ts`文件。将下面从`AppModule`类提取出来的代码拷贝进去：
|
||||
|
|
@ -1079,9 +1079,9 @@ block extract-id
|
|||
+makeExample('app/app-routing.module.ts')
|
||||
:marked
|
||||
Noteworthy points, typical of _Routing Modules_:
|
||||
|
||||
|
||||
典型**路由模块**值得注意的有：
|
||||
|
||||
|
||||
* Pull the routes into a variable. You might export it in future and it clarifies the _Routing Module_ pattern.
|
||||
|
||||
* 将路由抽出到一个变量中。你将来可能会导出它。而且它让**路由模块**模式更加明确。
|
||||
|
|
@ -1089,12 +1089,12 @@ block extract-id
|
|||
* Add `RouterModule.forRoot(routes)` to `imports`.
|
||||
|
||||
* 添加`RouterModule.forRoot(routes)`到`imports`.
|
||||
|
||||
* Add `RouterModule` to `exports` so that the components in the companion module have access to Router declarables
|
||||
|
||||
* Add `RouterModule` to `exports` so that the components in the companion module have access to Router declarables
|
||||
such as `RouterLink` and `RouterOutlet`.
|
||||
|
||||
* 添加`RouterModule`到`exports`，这样关联模块的组件可以访问路由的声明，比如`RouterLink`和`RouterOutlet`。
|
||||
|
||||
|
||||
* No `declarations`! Declarations are the responsibility of the companion module.
|
||||
|
||||
* 无`Declarations`！声明是关联模块的任务。
|
||||
|
|
@ -1107,7 +1107,7 @@ block extract-id
|
|||
|
||||
### 更新_AppModule_
|
||||
|
||||
Now delete the routing configuration from `AppModule` and import the `AppRoutingModule`
|
||||
Now delete the routing configuration from `AppModule` and import the `AppRoutingModule`
|
||||
(_both_ with an ES `import` statement _and_ by adding it to the `NgModule.imports` list).
|
||||
|
||||
现在，删除`AppModule`中的路由配置，并导入`AppRoutingModule`（使用ES`import`语句导入**并**将它添加到`NgModule.imports`列表）。
|
||||
|
|
@ -1120,7 +1120,7 @@ block extract-id
|
|||
null,
|
||||
`app/app.module.ts (after), app/app.module.ts (before)`)
|
||||
:marked
|
||||
It's simpler and focused on indentifying the key pieces of the application.
|
||||
It's simpler and focused on indentifying the key pieces of the application.
|
||||
|
||||
它更简单，专注于确定应用的关键部分。
|
||||
|
||||
|
|
@ -1132,7 +1132,7 @@ block extract-id
|
|||
|
||||
Earlier we added the ability to select a hero from the dashboard.
|
||||
We'll do something similar in the `HeroesComponent`.
|
||||
|
||||
|
||||
之前我们添加了从仪表盘选择一个英雄的功能。
|
||||
我们现在要做的事和`HeroesComponent`中很像。
|
||||
|
||||
|
|
@ -1146,12 +1146,12 @@ block extract-id
|
|||
:marked
|
||||
Our goal is to move the detail to its own view and navigate to it when the user decides to edit a selected hero.
|
||||
|
||||
我们要做的是将详情建移动到它自己的视图，并在用户决定编辑一个英雄时导航到它。
|
||||
我们要做的是将英雄详情移动到它自己的视图，并在用户决定编辑一个英雄时导航到它。
|
||||
|
||||
Delete the `<h1>` at the top (we forgot about it during the `AppComponent`-to-`HeroesComponent` conversion).
|
||||
|
||||
删除顶部的`<h1>`（在从`AppComponent`转到`HeroesComponent`时忘记改它了）。
|
||||
|
||||
|
||||
删除顶部的`<h1>`（在从`AppComponent`转到`HeroesComponent`时忘记修改它了）。
|
||||
|
||||
Delete the last line of the template with the `<my-hero-detail>` tags.
|
||||
|
||||
删除模板最后带有`<my-hero-detail>`标签的那一行。
|
||||
|
|
@ -1197,7 +1197,7 @@ figure.image-display
|
|||
Notice that the hero's name is displayed in CAPITAL LETTERS. That's the effect of the `uppercase` pipe
|
||||
that we slipped into the interpolation binding. Look for it right after the pipe operator ( | ).
|
||||
|
||||
注意，英雄的名字全被显示成大写字母。那是 `uppercase`管道的效果，借助它，我们能干预插值表达式绑定过程。可以管道操作符 ( | ) 后面看到它。
|
||||
注意，英雄的名字全被显示成大写字母。那是`uppercase`管道的效果，借助它，我们能干预插值表达式绑定的过程。可以在管道操作符(|)后面看到它。
|
||||
|
||||
+makeExcerpt('app/heroes.component.html', 'pipe', '')
|
||||
|
||||
|
|
@ -1242,7 +1242,7 @@ figure.image-display
|
|||
|
||||
1. 把样式内容*剪切并粘贴*到新的<span ngio-ex>heroes.component.css</span>文件。
|
||||
|
||||
1. *Set* the component metadata's `templateUrl` and `styleUrls` properties to refer to both files.
|
||||
1. *Set* the component metadata's `templateUrl` and `styleUrls` properties to refer to both files.
|
||||
|
||||
1. *设置*组件元数据的`templateUrl`和`styleUrls`属性，分别引用这两个文件。
|
||||
|
||||
|
|
@ -1253,10 +1253,10 @@ figure.image-display
|
|||
.l-sub-section
|
||||
:marked
|
||||
The `styleUrls` property is !{_an} !{_array} of style file names (with paths).
|
||||
We could list multiple style files from different locations if we needed them.
|
||||
|
||||
We could list multiple style files from different locations if we needed them.
|
||||
|
||||
`styleUrls`属性是一个由样式文件的文件名(包括路径)组成的数组。
|
||||
我们还可以列出来自多个不同位置的样式文件。
|
||||
我们还可以列出来自多个不同位置的样式文件。
|
||||
|
||||
block heroes-component-cleanup
|
||||
//- Only relevant for Dart.
|
||||
|
|
@ -1268,7 +1268,7 @@ block heroes-component-cleanup
|
|||
|
||||
### 更新_HeroesComponent_类
|
||||
|
||||
The `HeroesComponent` navigates to the `HeroesDetailComponent` in response to a button click.
|
||||
The `HeroesComponent` navigates to the `HeroesDetailComponent` in response to a button click.
|
||||
The button's _click_ event is bound to a `gotoDetail` method that navigates _imperatively_
|
||||
by telling the router where to go.
|
||||
|
||||
|
|
@ -1290,7 +1290,7 @@ block heroes-component-cleanup
|
|||
1. Implement `gotoDetail` by calling the `router.navigate` method
|
||||
|
||||
1. 实现`gotoDetail`，调用`router.navigate`方法
|
||||
|
||||
|
||||
+makeExcerpt('app/heroes.component.ts', 'gotoDetail')
|
||||
:marked
|
||||
Note that we're passing a two-element **link parameters !{_array}**
|
||||
|
|
@ -1372,7 +1372,7 @@ block heroes-component-cleanup
|
|||
|
||||
在`!{_appDir}`目录下添加<span ngio-ex>hero-detail.component.css</span>文件，
|
||||
并且在`styleUrls`数组中引用它 —— 就像之前在`DashboardComponent`中做过的那样。
|
||||
同时删除`hero``@Input`装饰器属性<span if-docs="ts">和它的导入语句</span>。
|
||||
同时删除`hero``@Input`装饰器属性<span if-docs="ts">和它的导入语句</span>。
|
||||
|
||||
Here's the content for the aforementioned component CSS files.
|
||||
|
||||
|
|
@ -1409,11 +1409,11 @@ block css-files
|
|||
**The *routerLinkActive* directive**
|
||||
|
||||
***routerLinkActive*指令**
|
||||
|
||||
|
||||
The Angular Router provides a `routerLinkActive` directive we can use to
|
||||
add a class to the HTML navigation element whose route matches the active route.
|
||||
All we have to do is define the style for it. Sweet!
|
||||
|
||||
|
||||
Angular路由器提供了`routerLinkActive`指令，我们可以用它来为匹配了活动路由的HTML导航元素自动添加一个CSS类。
|
||||
我们唯一要做的就是为它定义样式。真好！
|
||||
|
||||
|
|
@ -1481,12 +1481,12 @@ figure.image-display
|
|||
.l-main-section
|
||||
:marked
|
||||
## Application structure and code
|
||||
|
||||
|
||||
## 应用结构和代码
|
||||
|
||||
Review the sample source code in the <live-example></live-example> for this chapter.
|
||||
Verify that we have the following structure:
|
||||
|
||||
|
||||
回顾一下本章<live-example>在线例子</live-example>中范例代码。
|
||||
验证我们是否已经得到了如下结构：
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue