假设,当前实例化的组件是 C1 组件,那 C1 的 PreOrderHooks 会被 regsiter 到 C1 的parent TView,也就是 App TView。 同理,如果当前实例化的组件是 App 组件,那 App 的 PreOrderHooks 会被 register 到 App 的parent TView,也就是 Root TView。 这个概念和组件
import{Component,ViewChildren,QueryList,AfterViewInit}from'@angular/core';import{ChildComponent}from'./child.component';@Component({selector:'app-parent',template:` <app-child></app-child> <app-child></app-child> <app-child></app-child> `, })exportclassParentComponentimplementsAfterViewInit{@...
父组件(parent.component.ts): import { Component, AfterViewInit, ViewChild } from '@angular/core'; import { ChildComponent } from './child.component'; @Component({ selector: 'app-parent-component', templateUrl: './parent.component.html' }) export class ParentComponent implements AfterViewInit...
Optionally, add a code template, for example: ** * Created by ${USER} on ${DATE} */ import { Component } from '@angular/core'; Click Apply. Create a child template for the related HTML file: Select the parent template Angular Component and click the Create Child Template File button ...
I need the ability to obtain a reference to the parent component generically without the child having to know the type of the parent component. Basically I need something like this (pseudocode): @Component( { template: '<child></child>' ...
I created this simple example to try to explain better the problem: With the following base componentapp/base-panel.component.ts: import{Component,Input}from'angular2/core';@Component({selector:'base-panel',template:'{{content}}',styles:[`.panel{padding: 50px;}`]})exportclassBasePanelCompon...
In template-driven, we use directives to create the model. In model-driven, we generate a model on the component and then use directives to map elements in the template to our form model. Angular FormControl FormControl is one of the three fundamental building blocks of Angular forms...
as sibling routes with the parent tab as the path prefix. The example below defines the/tabs/tab1/viewroute as a sibling of the/tabs/tab1route. Since this new route has thetab1prefix, it will be rendered inside of theTabscomponent, and Tab 1 will still be selected in theion-tab-bar...
child routes to inherit their data by default. The default `paramsInheritanceStrategy` is `emptyOnly`. If parent data should be inherited in child routes, this should be manually set to `always`. - `urlHandlingStrategy` has been removed from the Router public API. ...
Likewise, @Input decorators are used to populate a child component from a parent component, as shown in Figure 9.Figure 9 Example of @Input DecoratorC# Copy @Component({ template: '<product-info [productDetails]="product"></product-info>' }) export class Prod...