import { FormGroup, FormBuilder, AbstractControl , FormControl } from '@angular/forms';/*导入FormGroup等*/<br><br>constructor(<br> private formBuilder: FormBuilder/*将FormBuilder注册*/<emid="__mceDel">) {<br> this.nav = 0;<br> this.searchForm = this.formBuilder.group({/*定义字段*...
template: ` <form [formGroup]="myForm"> <!-- form controls here --> </form> `, }) export class ExampleComponent implements OnInit { myForm: FormGroup; ngOnInit() { this.myForm = new FormGroup({ // form controls
使用索引访问formArray中的FormGroup,然后检查该FormGroup是否无效。 <button [disabled]="productForm.get('productsArray').at(tableDetails.data.indexOf(child)).invalid" (click)="addCart()"> add to cart</button> ForkedExample 从do()到tap()的转换从Angular2到Angular6 ...
<tt>myForm.userName.$valid = {{myForm.userName.$valid}}</tt><br> <tt>myForm.userName.$error = {{myForm.userName.$error}}</tt><br> <tt>myForm.lastName.$valid = {{myForm.lastName.$valid}}</tt><br> <tt>myForm.lastName.$error = {{myForm.lastName.$error}}</tt><br> <t...
IntelliJ IDEA 识别表单组对象初始化器中的 control、 group 和array ,新实例调用(FormGroup、 FormControl 和FormArray),以及 FormBuilder 方法。 此外,对于 FormBuilder.group 初始化器,还支持格式为 foo: '' 和 foo: [''] 的简写控件。 对于FormGroup.get() 调用,IntelliJ IDEA 提供代码补全、名称验证、未...
问Angular将FormGroup添加到FormGroupEN不需要向父组添加新的FormGroup实例，只需添加子窗体组本身。
<input [formControl]="name"> 1. Okay, let’s take a basic example. First, create a new angular project. Then import the ReactiveFormsModule inside the app.module.ts file. // app.module.ts import { BrowserModule } from '@angular/platform-browser'; ...
So let's take an example first before explain some details stuff: import { Component } from '@angular/core'; import { FormControl, FormGroup } from '@angular/forms'; @Component({ ... template: `<divclass="stock-inventory"><form[formGroup]="form"><divformGroupName="store"><inputtype...
<div class="example-outlet"> <form [formGroup]="formGroupForAddField" (ngSubmit)="addField(formGroupForAddField)"> <label>角色:</label> <select formControlName="role"> <option value="student">学生</option> <option value="teacher">老师</option> ...
const input$ = <FormGroup>this.userForm.controls['address']; input$.valueChanges.debounceTime(1000).distinctUntilChanged().subscribe(cityValue => { const msg = cityValue + ' 欢迎你!'; userService.welcome(msg); }); 使用响应式表单,不但能流式的处理用户输入,还能加延时,判断重复消息,总之结合Re...