我的组件中有一个简单的输入,它使用[(ngModel)]:
<input type="text" [(ngModel)]="test" placeholder="foo" />
当我启动应用程序时,即使没有显示组件,也会出现以下错误。
zone.js:461未处理的Promise拒绝:模板解析错误:无法绑定到“ngModel”,因为它不是“input”的已知属性。
以下是组件。ts:
import { Component, EventEmitter, Input, OnInit, Output } from '@angular/core';
import { Intervention } from '../../model/intervention';
@Component({
selector: 'intervention-details',
templateUrl: 'app/intervention/details/intervention.details.html',
styleUrls: ['app/intervention/details/intervention.details.css']
})
export class InterventionDetails
{
@Input() intervention: Intervention;
public test : string = "toto";
}
在ngModule中,您需要导入FormsModule,因为ngModel来自FormsModule。请按照我分享的以下代码修改app.module.ts
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
@NgModule({
declarations: [
AppComponent,
HomeComponent
],
imports: [
BrowserModule,
AppRoutingModule,
FormsModule
],
bootstrap: [AppComponent]
})
export class AppModule { }
简单解决方案:在文件app.module.ts中-
示例1
import {FormsModule} from "@angular/forms";
// Add in imports
imports: [
BrowserModule,
FormsModule
],
示例2
如果要使用[(ngModel)],则必须在app.module.ts中导入FormsModule:
import { FormsModule } from "@angular/forms";
@NgModule({
declarations: [
AppComponent, videoComponent, tagDirective,
],
imports: [
BrowserModule, FormsModule
],
providers: [ApiServices],
bootstrap: [AppComponent]
})
export class AppModule { }