private viewContainerRef: ViewContainerRef) { } @Input() set appIfNot(value: boolean) { if (value === false) { this.viewContainerRef. createEmbeddedView(this.templateRef); } else { this.viewContainerRef.clear() } } }
value differs from the previous call to `setInput`. - `RendererType2.styles` no longer accepts a nested arrays. - The `APP_ID` token value is no longer randomly generated. If you are bootstrapping multiple application on the same page you will need to set to provide the `APP_ID` you...
ng-class:The ngClass directive allows you to dynamically set CSS classes on an HTML element by databinding an expression that represents all classes to be added.一般里面是一个表达式,请参考ngClass $pristine:是一个boolean值,如果为true,说明user没有和form进行交互,也就是说form没有被修改,参考:$pris...
If you would like to dynamically set properties after creation, you can use the setOptions method. ngAfterViewInit(): void { this.myButtonGroup.createComponent(this.ButtonGroupSettings); } The following example demonstrates how to create a ButtonGroup component for Angular by using the create...
SVG in templates—dynamically generate interactive graphics. Template reference variables (#) <!--lots of other elements--><!--phone refers to the input element; pass its `value` to an event handler-->Call
attribute binding (`HostBinding('attr.href')`). The effect of this change is that `DebugElement.properties['href']` will now return the `href` value returned by the native element which will be the full URL rather than the internal value of the `RouterLink` `href` property. ...
使用的selector正是router-outlet. 如下图第60行代码所示。 Each outlet can have a unique name, determined by the optional name attribute. The name cannot be set or changed dynamically. If not set, default value is "primary". 每个router-outlet可以分配一个name,默认的名称是==primary==. ...
You may have a look atcore-layout(GitHub repo), an Angular demo app that shows how you can use theiscrolldirective in a responsive-design web-app with support for both drawers (slide-out menus) and modals. For example, the demo shows how to handle DOM content generated dynamically through...
ngFor: It is used for iterating over arrays or lists to create multiple elements dynamically. For example, you can generate a list of items. ngSwitch: It is used to conditionally render elements based on a specific value. For example, you can switch between different views based on a var...
ComponentRef.setInput will only set the input on the component if it is different from the previous value (based on Object.is equality). If code relies on the input always being set, it should be updated to copy objects or wrap primitives in order to ensure the input value differs from ...