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docs: add api doc to commonly queried elements

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This commit is contained in:
Judy Bogart
2018-07-02 12:06:52 -07:00
committed by Victor Berchet
parent 86203736e9
commit f1ab394218
11 changed files with 712 additions and 473 deletions
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11
aio/content/guide/ngmodule-api.md
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@ -12,8 +12,8 @@ A basic understanding of the following concepts:
At a high level, NgModules are a way to organize Angular apps
and they accomplish this through the metadata in the `@NgModule`
decorator. The metadata falls
into three categories:
decorator.
The metadata falls into three categories:
* **Static:** Compiler configuration which tells the compiler about directive selectors and where in templates the directives should be applied through selector matching. This is configured via the `declarations` array.
* **Runtime:** Injector configuration via the `providers` array.
@ -75,9 +75,8 @@ The following table summarizes the `@NgModule` metadata properties.
</ol>
Components, directives, and pipes must belong to _exactly_ one module.
The compiler emits an error if you try to declare the same class in more than one module.
Don't re-declare a class imported from another module.
The compiler emits an error if you try to declare the same class in more than one module. Be careful not to re-declare a class that is imported
directly or indirectly from another module.
</td>
@ -108,7 +107,7 @@ The following table summarizes the `@NgModule` metadata properties.
Components in external modules continue to receive the instance provided by their injectors.
For more information on injector hierarchy and scoping, see [Providers](guide/providers).
For more information on injector hierarchy and scoping, see [Providers](guide/providers) and the [DI Guide](guide/dependency-injection).
</td>