ngComponentOutlet ngComponentOutlet 是 Angular built-in 的 Structural Directive,它的作用就是输出 Dynamic Component。 App Template show say hishow hello world<ng-container[ngComponentOutlet]="showComponent"> 有2 个 Dynamic Component,一个是 SayHi 组件,一个是 HelloWorld 组件。 点击其中一个按钮它就会 ...
我们在NodeInjector和Dynamic Component文章中讲解过 NodeInjector 的查找规则。 虽然都对,但是不够细,这里我们补上几个细节。 在没有 Dynamic Component 和 ng-template 的场景下,LView 的 parent LView 和 Declaration View 一定是相同的。 在这个前提下,我们可以说 "parent Injector 在 parent LView 里",也可以说...
template:'Heroes: {{heroes | json}}'})exportclassHeroListComponentimplementsOnInit{heroes!:Hero[];constructor(publicheroService:HeroService){}ngOnInit():void{this.heroes=this.heroService.getHeroes();}}
export class HeroChildComponent { @Input() hero: Hero; @Input('master') masterName: string; } In the example above, the second @Input aliases another child component property by naming masterName as master. HeroParentComponentnests the child HeroChildComponent inside an *ngFor repeater: TypeScr...
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>' ...
export class HeroListComponent implements OnInit { heroes!: Hero[]; constructor(public heroService: HeroService) {} ngOnInit(): void { this.heroes = this.heroService.getHeroes(); } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. ...
While similar, theloadChildrenproperty is a way to reference a module by using native import instead of a component directly. In order to do this though, we need to create a module for each of the components. ... import{RouterModule}from'@angular/router'; ...
Note: All services in Angular are singletons. That means that the injector uses each recipe at most once to create the object. The injector then caches the reference for all future needs. 注意:Angular 中所有的服务都是单例模式。这意味着注入器创建这个对象时,仅使用一次recipe。然后注入器缓存所有...
constVComponent=Vue.component('hello-component',{props:{firstName:String,lastName:String},render(h){return(Hi,{this.firstName}{this.lastName})}}) In the end,register the Vue componentto the Angular module withvaluemethod like this: app.value('Hello...
Adding CSS reference Add the Angular PDF Viewer component’s styles as given below insrc/styles.cssfile. @import'../node_modules/@syncfusion/ej2-base/styles/material.css';@import'../node_modules/@syncfusion/ej2-buttons/styles/material.css';@import'../node_modules/@syncfusion/ej2-dropdowns...