Using Angular HttpClient to make a POST request

In this tutorial, we will learn how to use Angular’s HttpClient module to make a POST request to a server. We will use the example of a simple form submission to demonstrate this.

Step 1: Set up Angular HttpClient

First, make sure you have HttpClientModule imported in your AppModule:

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

    @NgModule({
      ...
      imports: [
        ...
        HttpClientModule
      ],
      ...
    })
    export class AppModule { }
    
    

Step 2: Create a service to handle the HTTP request

Create a new service in Angular using the Angular CLI:

    
    ng generate service http-service
    
    

Open the newly created service file and add a method to make a POST request:

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

    @Injectable({
      providedIn: 'root'
    })
    export class HttpService {

      constructor(private http: HttpClient) { }

      postData(data: any) {
        return this.http.post('https://example.com/api/submitForm', data);
      }
    }
    
    

Step 3: Use the service in your component

Now you can use the HttpService in your component to make a POST request when a form is submitted:

    
    import { Component } from '@angular/core';
    import { HttpService } from './http.service';

    @Component({
      selector: 'app-form',
      template: `
        
          
          
          Submit
        
      `
    })
    export class FormComponent {

      formData = {
        name: '',
        email: ''
      };

      constructor(private httpService: HttpService) {}

      submitForm() {
        this.httpService.postData(this.formData).subscribe(response => {
          console.log('Form submitted successfully', response);
        });
      }
    }
    
    

That’s it! You have now learned how to use Angular’s HttpClient module to make a POST request to a server. You can use this method to handle form submissions, API requests, and more in your Angular applications.