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Angular 9 HttpClient Delete Request Example



This article goes in detailed on http delete request example in angular 9. i would like to share with you httpclient delete request example angular 9. This post will give you simple example of angular http client delete example. This post will give you simple example of angular 9 http delete request example. you will do the following things for angular httpclient delete request body example.

You can easily run delete request api for remove item in angular. you can also use delete api in angular 6, angular 7, angular 8 and angular 9.

Here, i will give you very simple example to delete record using api using delete request api. we will use jsonplaceholder api for testing now. so we don't require to create new api for it.

So, let's see bellow example step by step how to delete http service and how to use it.

Step 1: Create New App

You can easily create your angular app using bellow command:

ng new my-new-app

Step 2: Import HttpClientModule

In this step, we need to import HttpClientModule to app.module.ts file. so let's import it as like bellow:

src/app/app.module.ts

import { BrowserModule } from '@angular/platform-browser';

import { NgModule } from '@angular/core';

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

import { HttpClientModule } from '@angular/common/http';

@NgModule({

declarations: [

AppComponent

],

imports: [

BrowserModule,

HttpClientModule

],

providers: [],

bootstrap: [AppComponent]

})

export class AppModule { }

Step 3: Create Service for API

Here, we need to create service for http client request. we will create service file and write client http request code. this service will use in our component file. So let's create service and put bellow code:

ng g s post

Now let's add code as like bellow:

src/app/post.service.ts

import { Injectable } from '@angular/core';

import { HttpClient } from '@angular/common/http';

@Injectable({

providedIn: 'root'

})

export class PostService {

private url = 'https://jsonplaceholder.typicode.com/posts';

constructor(private httpClient: HttpClient) { }

getPosts(){

return this.httpClient.get(this.url);

}

deletePost(id){

return this.httpClient.delete(this.url+'/'+id);

}

}

Step 4: Use Service to Component

Now we have to use this services to our app component. So let's updated code as like bellow:

src/app/app.component.ts

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

import { PostService } from './post.service';

@Component({

selector: 'app-root',

templateUrl: './app.component.html',

styleUrls: ['./app.component.css']

})

export class AppComponent implements OnInit {

posts;

constructor(private service:PostService) {}

ngOnInit() {

this.service.getPosts()

.subscribe(response => {

this.posts = response;

});

}

deleteItem(post){

this.service.deletePost(post.id)

.subscribe(response => {

this.posts = this.posts.filter(item => item.id !== post.id);

});

}

}

Step 5: Updated View File

Now here, we will updated our html file. let's put bellow code:

src/app/app.component.html

<h1>Angular 8/9 HttpClient Delete Example - HDTuto.com</h1>

<ul class="list-group">

<li

*ngFor="let post of posts"

class="list-group-item">

{{ post.title }}

<button (click)="deleteItem(post)">Delete</button>

</li>

</ul>

Now we are ready to run our example, you can run by following command:

ng serve

I hope it can help you...




May 6, 2020 | Category : AngularAngular 9



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