如果表单控件的值等于'example',我们将其标记为无效,否则将其标记为有效。 在模板文件(my-form.component.html)中,我们可以使用ngFor指令来动态渲染表单控件,并提供添加和删除控件的功能。 代码语言:txt 复制 <form [formGroup]="myForm"> <div formArrayName="items"> <div *ngFor="let item of myForm.get...
FormArray 是 FormGroup 之外的另一个选择,用于管理任意数量的匿名控件。像 FormGroup 实例一样,你也可以往 FormArray 中动态插入和移除控件,并且 FormArray 实例的值和验证状态也是根据它的子控件计算得来的。不过,你不需要为每个控件定义一个名字作为 key,因此,如果你事先不知道子控件的数量,这就是一个很好的选...
演示Url--https://stackblitz.com/edit/angular-gncrek?file=src/app/app.component.html 单击添加字段按钮,我将formGroup动态添加到formArray。 如果用户在类型下拉列表中选择下拉列表,我将显示一个输入字段,用户可以在其中添加值并单击“添加”按钮。 每次用户在输入字段中添加一些值并单击add时,我都需要在下面的演...
官方例子里说了FormArray可以嵌套group或者array,但只给了control的实例,这里记录一下嵌套group ts文件: import { Component } from '@angular/core'; import { FormBuilder } from '@angular/forms'; import { Validators } from '@angular/forms'; import { FormArray } from '@angular/forms'; @Component(...
class="example-full-width d-block input-small-size col-sm-2.4" appearance="outline"> <mat-select formControlName="gender" placeholder="Gender"> <mat-option value="Male">Male</mat-option> <mat-option value="Female">Female</mat-option> ...
创建一个FormArray实例,并设置起始值: 代码语言:txt 复制 const formArray = new FormArray([ new FormControl('value1'), new FormControl('value2'), new FormControl('value3') ]); 在单元测试中使用该FormArray实例: 代码语言:txt 复制 it('should set initial value for FormArray', () => { /...
FormArrayis used as an array that wraps around an arbitrary amount ofFormControl,FormGroup, or even otherFormArrayinstances. WithFormArrayyou can add new form fields or a set of form fields declaratively. In this article, we will go over an example application consisting of an order form fo...
This package is an Angular 2+ binding for [Sortable.js](https://github.com/RubaXa/Sortable). Supports standard arrays and Angular `FormArray`. ngx-sortablejs angular-sortablejs sortablejs angular sortable draggable maksim_m• 15.0.0 • 2 years ago • 0 dependents • MITpublished version...
{ title ='Angular - MSAL Example'; loginDisplay =false; tokenExpiration:string='';privatereadonly _destroying$ =newSubject<void>();constructor(@Inject(MSAL_GUARD_CONFIG)privatemsalGuardConfig: MsalGuardConfiguration,privateauthService: MsalService,privatemsalBroadcastService: MsalBroadcastService) { }/...
For example, the following keyframes rule in a component definition, whose "scope name" is host-my-cmp: @keyframes foo { ... } will become: @keyframes host-my-cmp_foo { ... } Any TypeScript/JavaScript code which relied on the names of keyframes rules ...