styleUrl:'./menu-item-wrapper.component.scss',//1. 把 MenuItem 提供出去providers: [{ provide: MenuItemComponent, useFactory: ()=>{ const wrapper= inject(MenuItemWrapperComponent, { self:true});returnwrapper.menuItem; } }] }) export class MenuItemWrapperComponent { @ViewChild(MenuItemCompone...
@Input allows you to pass data into your controller and templates through html and defining custom properties. This allows you to easily reuse components, such as item renderers, and have them display different values for each instance of the renderer. For this part of code, we use 'todo' ...
This is helpful when building reusable components because it prevents a component from changing your model state except for the models that you explicitly pass in. 顾名思义,指令的隔离作用域隔离了除模块中明确添加到scope对象的任何东西。这在构建可复用组件时很有用,因为它防止组件在修改你的model状态时...
- The `ngModuleFactory` input of the `NgComponentOutlet` directive is deprecated in favor of a newly added `ngModule` input. The `ngModule` input accepts references to the NgModule class directly, without the need to resolve module factory first. ### forms - The `initialValueIsDefault` op...
url:this.fb.control(/*initial value*/'', /*validators that they should pass*/[]')' }); 所以您创建了一个FormControl,而不是Array<string> 下面是一个使用reactive表单的模板示例: <!-- component.template.html --> <!-- more inputs maybe ...
import { Component, Input } from '@angular/core'; import { Hero } from './hero'; @Component({ selector: 'app-hero-child', template: ` {{hero.name}} says: I, {{hero.name}}, am at your service, {{masterName}}. ` }) export class HeroChildComponent { @Input() hero: Hero; ...
To set the selected date, use the [value] (https://ej2.syncfusion.com/angular/documentation/api/datepicker/#value) property. The below example demonstrates the DatePicker with current date as selected one. app.component.ts main.ts import { NgModule } from '@angular/core' import { BrowserMo...
ThecanActivateAuthRolecan be used in the route configuration to protect specific routes. import{Routes}from'@angular/router';import{HomeComponent}from'./components/home/home.component';import{BooksComponent}from'./components/books/books.component';import{canActivateAuthRole}from'./guards/auth-role.guard...
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The signature of the `setupTestingRouter` function from `@angular/core/testing` has been changed to drop its `NgModuleFactoryLoader` parameter, as an argument for that parameter can no longer be created. ### service-worker - The return type of `SwUpdate#activateUpdate` and `SwUpdate#check...