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...
报错如下: 报这个错的原因是你使用了angular的响应式表单,formGroup是指定命令的选择器,它是ReactiveFormsModule的一部分,很显然在app.module.ts没有引入。解决方案: 1.引入ReactiveFormsModule 2. 在imports中引入之后就完美解决了,如果有帮助请记得点赞关注哦!!! Angular...
ERROR Error: formGroup expects a FormGroup instance. Please pass one in. Example: In your class: this.myGroup = new FormGroup({ firstName: new FormControl() }); at Function.missingFormException (reactive_errors.ts:38) at FormGroupDirective._checkFormPresent (form_group_directive.ts:300) ...
import { CommonModule } from '@angular/common'; import { FormArray, FormControl, FormGroup, ReactiveFormsModule, Validators } from '@angular/forms'; import { Meta, moduleMetadata, Story } from '@storybook/angular'; export default { title: 'Example/A', component: AComponent, decorators: [...
Example: <div [formGroup]="myGroup"> <input formControlName="firstName"> </div> In your class: this.myGroup = new FormGroup({ firstName: new FormControl() }); Or, if you'd like to avoid registering this form control, indicate that it's standalone in ngModelOptions: Example: <...
This example is here With FormControlFormGroup: constructor(private fb: FormBuilder) { } profileForm = new FormGroup({ firstName: new FormControl(''), lastName: new FormControl(''), address: new FormGroup({ street: new FormControl(''), city: new FormControl(''), state: new FormCont...
<form #form="ngForm" [formGroup]="sectionForm" #formDirective="ngForm" (ngSubmit)="setSections(sectionForm.value,null,formDirective)"> <div fxLayout="row wrap" style="padding: 0px 16px;"> <mat-checkbox class="example-margin" [(ngModel)]="isIndividualMark" [ngModelOptions]="{stand...
如果表单组标记中的某些表单控件(如Input、Selects等)没有formControlName属性，则会出现此错误。
You'll want to add a formGroup directive and pass it an existing FormGroup instance (you can create one in your class). Example: <div [formGroup]="myGroup"> <input formControlName="firstName"> </div> In your class: this.myGroup = new FormGroup({ firstName: new FormControl() })...
import { Component, OnInit } from '@angular/core'; import {FormControl, FormBuilder, FormGroup, FormArray } from '@angular/forms'; /** @title Select with multiple selection */ @Component({ selector: 'select-multiple-example', templateUrl: 'select-multiple-example.html', ...