官网文档说的足够用了 An injectable service for executing work inside or outside of the Angular zone. The most common use of this service is to optimize perfo ...

看来要把Injector 和 provide 一起看了才能理解通注入这块 来自官网的提示 Injectable Services Notice that we imported the Angular Injectable function and applied that function as ...

@HostBindingMetadata 其实就是directive 的metadata里的那个host的属性绑定@HostListener 对应是host 的事件绑定 上个例子 @Directive({selector: '[ngModel]'})class NgModelSt ...

EventEmitter 就是用于发出一个event，一般用于output @Component({ selector: 'zippy', template: ` <div class="zippy"> <div (click)="toggle()">T ...

这里描述讲了些关于view的概念，太好了！ View就是一堆元素的组成，一起创建一起消灭 一个view可以有多个View Containers 元素里的内嵌的view 可以通过ViewContainerRef 来操作 开始不清楚怎么看到这个ViewRef，后来跟踪到 AppViewManage ...

An ElementRef is created for each element in the Template that contains a Directive, Component or data-binding. An ElementRef is backed by a render- ...

DirectiveResolver resolve(type: Type) : DirectiveMetadataReturn DirectiveMetadata for a given Type. resolve(type: Type): DirectiveMetadata { v ...

Specifies that a constant attribute value should be injected.The directive can inject constant string literals of host element attributes. 注入此指令获取当前 ...

就定义了一个空方法export class XHR { get(url: string): Promise<string> { return null; }}要改名字 rename it into TemplateLoader后来搜到这个东西在 ...

UrlResolver 具有非常实际的用途，特别在部署上 Used by the Compiler when resolving HTML and CSS template URLs. This class can be overridden by the application developer ...