如果幂等的表达式返回一个对象(包括 Date 或Array),连续调用它两次,也应该返回同一个对象的引用。 模板语句 模板语句用来响应由绑定目标(如 HTML 元素、组件或指令)触发的事件。 模板语句将在事件绑定一节看到,它出现在 = 号右侧的引号中,就像这样:(event)="statement"。 src/app/app.component.html 代码语
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...
注:参数类型是比较紧的 Array<StaticProvider>,而不是像 appConfig.providers 那样宽松的 Array<Provider | EnvironmentProviders>。 Platform Injector 是一种 R3Injector Platform Injector 其实也是用 Injector.create 创建出来的,它的类型依然是 R3Injector。只是它多了一个 Provider INJECTOR_SCOPE = 'platform' 而已。
- 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...
This new configuration automatically shares all local libararies. Hence, you don't need to do a thing. However, if you want to control, which local libraries to share, you can use the thesharedMappingsarray: module.exports=withModuleFederationPlugin({shared:{...shareAll({singleton:true,strict...
We’ve seen that you can pass in models to a directive using the isolate scope, but sometimes it’s desirable to be able to pass in an entire template rather than a string or an object. Let’s say that we want to create a “dialog box” component. The dialog box should be able to...
So, all of this is just to pass a simple player object to a dynamic component. I mean, if this wasn’t a dynamic component, we’d simply make this an@Inputand just bind the player data object to the@Inputin the parent. But this is a dynamically created component, so we can’t do...
The following section explains the steps required to create a simple DatePicker component and also it demonstrates the basic usage of the DatePicker. To get start quickly with Angular DatePicker component, refer to the video below. Dependencies Install the below required dependency package in order to...
An override is an array of length 2, where the first entry is the original import to be removed from the tested component during the test and the second entry is the replacement import. In the example below, StandaloneComponentWithDependency is removed from the tested component, and MockStand...
The Keycloak client documentation recommends to use the same version of your Keycloak server installation. Setup To initialize Keycloak, addprovideKeycloakto theprovidersarray in theApplicationConfigobject (e.g., inapp.config.ts). IfinitOptionsis included,keycloak-angularwill automatically useprovideAppIn...