角度 6 "Can't bind to 'ngModel' since it isn't a known property of 'input'."

Question

有很多人已经问过这个问题，但我已经按照每个答案将其导入到我的app.module.ts文件中，甚至导入到app.spec.ts文件中

这里是html文件：

<p>{{ randomWord }}</p>
<input type="text" [(ngModel)]="enteredValue">
<button (click)="onSubmit()" >Submit</button>
<p>{{ answer }}</p>

这是app.module.ts文件：

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';

import { AppComponent } from './app.component';
import { TestComponent } from './test/test.component';

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';

import { AppComponent } from './app.component';
import { TestComponent } from './test/test.component';

@NgModule({
declarations: [
AppComponent,
TestComponent,
FormsModule
],
imports: [
BrowserModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }

Answer 1

导入FormModule而不是声明

declarations: [
AppComponent,
TestComponent,
],
imports: [
BrowserModule,
FormsModule
],

示例演示

https://stackblitz.com/edit/angular-ngmodel-stackovf?file=app/app.component.html

Answer 2

在app.module.ts文件中添加以下代码解决了我的问题

添加表单导入

import {FormsModule } from '@angular/forms';

然后在@NgModule的导入部分中添加FormsModule

@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
HttpClientModule,
AppRoutingModule,
FormsModule
],
providers: [],
bootstrap: [ AppComponent ]
})