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...
… Add Picture Remove First ... 现在,我们可以实现添加新图片的代码。为此,我们将访问GalleryComponent的generateImage()方法,并将一个新项添加到pictures数组中作为第一个元素。代码如下: ... export class AppComponent { ... addNewPicture(gallery: GalleryComponent) { gallery.pictures.unshift(galle...
1. 所有要动态的组件除了需要 declarations之外还要声明到 entryComponents 里头, 原因是 ng 是通过扫描模板来 import component class 的, 动态组件不会出现在模板上所以我们要用另一个 way 告诉 ng。 providers: [ {provide: ANALYZE_FOR_ENTRY_COMPONENTS, useValue: [AComponentClass, BComponentClass], multi:t...
For example, you can dynamically add classes to theelement, depending on the size of the screen, to control the CSS: body.size-xsh3div{display:none; }body.size-sm{font-size:10px; } In a controller Simply inject$rootScopein your controller...
Specify the CSS selector and inline template to create Gantt on the page. 3. Declare a private property for Gantt that will be used in thengOnInitandngOnDestroymethods. 4. Create the Gantt instance in thengOnInitmethod and add the Gantt configuration there. ...
- `OnPush` components that are created dynamically now only have their host bindings refreshed and `ngDoCheck run` during change detection if they are dirty. Previously, a bug in the change detection would result in the `OnPush` configuration of dynamically created components to be ignored when ...
Directives in Angular as special markers or attributes that you add to elements in the HTML to extend their behavior or manipulate the DOM. Angular comes with built-in directives like `ngIf` (for conditional rendering), `ngFor` (for iterating over lists), and `ngStyle` (for dynamically set...
Dashboard panels are the basic building blocks of a dashboard and can be added programmatically or dynamically at runtime. The panels hold UI components and allow resizing, reordering, dragging and dropping, removing, and adding. Easily place components at the desired positions within the grid ...
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...
To toggle an application’s size mode between touch and normal (mouse) at runtime, simply add or remove thee-biggerclass. The following code demonstrates how to change the size mode dynamically: import{NgModule}from'@angular/core'import{BrowserModule}from'@angular/platform-browser'import{Calendar...