angular coding examples

// example.component.ts

@Component({
  templateUrl: './example.component.html'
})
export class ExampleComponent {
  timestamp:string = ‘2018-05-24T19:38:11.103Z’;
}

// my.component.html
<any-element (event)=“handler($event)”>innerHTML</any-element>

<!-- app.component.html -->

<!-- Outputs “HeLlO WoRlD!” -->
<h6>{{ someValue | example }}</h6>

<!-- Outputs “HELLO WORLD!” -->
<h6>{{ someValue | example:‘uppercase’ }}</h6>

<!-- Outputs “hello world!” -->
<h6>{{ someValue | example:‘lowercase’ }}</h6>

// ./components/example/example.component.ts

import { Component, OnInit } from '@angular/core';
import { Post, DATA } from '../../data/posts.data';

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html'
})
export class ExampleComponent implements OnInit {
  username: string;
  totalPosts: number;
  allPosts: Post[];

  deletePost(index: number): void {
    this.allPosts.splice(index, 1);
    this.totalPosts = this.allPosts.length;
  }

  ngOnInit(): void {
    this.username = DATA.author;
    this.totalPosts = DATA.thePosts.length;
    this.allPosts = DATA.thePosts;
  }
}

<!-- app.component.html -->

<ul>
  <!-- routerLink(s) here -->
</ul>
<router-outlet></router-outlet>
<!-- routed content appends here (AFTER THE ELEMENT, NOT IN IT!) -->

<ul *ngFor=“let potato of (potatoSack$ | async); let i=index”>
  <li>Potatoe {{i + 1}}: {{potato}}</li>
</ul>

// my.component.ts
@Component({
  templateUrl: './my.component.html'
})

export class MyComponent {
  handler(event):void {
      // function does stuff
  }
}

/* global styles.css */

.active {
  background-color: lightgrey !important;
}

<div *ngFor="let anyNameYouWant of [(observable$ | async)]">
  {{  anyNameYouWant }}
</div>

// app.component.ts

@Component({
  templateUrl: 'app.component.html'
})
export class AppComponent {
  someValue:string = "HeLlO WoRlD!";
}