如何使用angular5仅获取地址中的邮政编码

npm install -g @angular/cli

ng new my-app

cd my-app

ng generate component address

import { Component } from '@angular/core';
import { ActivatedRoute } from '@angular/router';

@Component({
  selector: 'app-address',
  templateUrl: './address.component.html',
  styleUrls: ['./address.component.css']
})
export class AddressComponent {
  postalCode: string;

  constructor(private route: ActivatedRoute) {
    this.route.paramMap.subscribe(params => {
      this.postalCode = params.get('postalCode');
    });
  }
}

<p>Postal Code: {{ postalCode }}</p>

import { RouterModule, Routes } from '@angular/router';

const routes: Routes = [
  { path: 'address/:postalCode', component: AddressComponent }
];

@NgModule({
  imports: [
    RouterModule.forRoot(routes)
  ],
  // ...
})
export class AppModule { }

<a routerLink="/address/12345">Go to Address</a>

ng serve