📜  组件中的 ionic ngfor - Javascript 代码示例

📅  最后修改于: 2022-03-11 15:02:33.580000             🧑  作者: Mango

代码示例1
I'm going crazy, i've created a new component and he's working fine. Now i would like to use this on two pages.

Then i've created a component module (/components/all-components.module.ts) like this :

import { NgModule } from '@angular/core';
import { TagsComponent } from './tags/tags.component';
import { IonicModule } from '@ionic/angular';


@NgModule({
  imports: [IonicModule],
  declarations: [
    TagsComponent
  ],
  exports: [
    TagsComponent
  ]
})

export class AllComponentsModule {}

I've added on app.module.ts the AllComponentsModule and on my 2 pages module i have added same.

Now, my component work fine when i'm displaying text or variable, my console.log return the data, but if i use *ngFor nothing appear.

Finally, here's my component

import { Component, OnInit, Input } from '@angular/core';

@Component({
  selector: 'app-tags',
  templateUrl: './tags.component.html',
  styleUrls: ['./tags.component.scss'],
})
export class TagsComponent implements OnInit {

  @Input() userTags: any;

  constructor() {
  }

  ngOnInit() {
      console.log(this.userTags);
  }
}

And the view:

hi

{{tag?.name}}

Ok i don't understand why but if i use a module to store all of components. On my all-components.module.ts i have to put the CommonModule to interpret *ngFor, *ngIf, etc. With CommonModule import all working fine ! Here's the code updated: import { NgModule } from '@angular/core'; import { TagsComponent } from './tags/tags.component'; import { CommonModule } from "@angular/common"; @NgModule({ imports: [CommonModule], declarations: [ TagsComponent ], exports: [ TagsComponent ] }) export class AllComponentsModule {}