Anil Singh | Code-sample.com

Angular HTTP vs. HttpClient - The HttpClient is used to perform HTTP requests and it imported form @angular/common/http. The HttpClient is more modern and easy to use the alternative of HTTP. HttpClient is an improved replacement for Http. They expect to deprecate Http in Angular 5 and remove it in a later version. It's an upgraded version of http from @angular/http module with the following improvements – 1.       Immutable request and response objects 2.       Interceptors allow middleware logic to be inserted into the pipeline 3.       Progress events for both request and response 4.       Typed 5.       Event firing 6.       Synchronous response body access 7.       Support JSON body types and JSON by default and now, no need to be explicitly parsed 8.     ...

What Is HttpClient in Angular? What Is the role and responsibility of HttpClient? HttpClient is performing HTTP requests and responses. Most of all web applications communicate with backend services over the HTTP protocol and all modern browsers support two different APIs for making HTTP requests i.e. 1.       XMLHttpRequest interface 2.       fetch() APIs The HttpClient is more modern and easy to use the alternative of HTTP. HttpClient is an improved replacement for HTTP. They expect to deprecate http in Angular 5 and remove it in a later version.   The new HttpClient service is included in the HTTP Client Module that used to initiate HTTP request and responses in angular apps. The HttpClientModule is a replacement of HttpModule. HttpClient also gives us advanced functionality like the ability to listen for progress events and interceptors to modify requests or responses. Before using the HttpClient...

Why you use BrowserModule, CommonModule, FormsModule, RouterModule, and HttpClientModule? BrowserModule  – The browser module is imported from @angular/platform-browser and it is used when you want to run your application in a browser. CommonModule  – The common module is imported from @ angular/common and it is used when you want to use directives - NgIf, NgFor and so on. FormsModule  – The forms module is imported from @angular/forms and it is used when you build template driven forms. RouterModule  – The router module is imported from @angular/router and is used for routing RouterLink, forRoot, and forChild. HttpClientModule  –The HttpClientModule is imported from @angular/common/http and it used to initiate HTTP request and responses in angular apps. The HttpClient is more modern and easy to use the alternative of HTTP.

The Web applications communicate with backend services over the HTTP/HTTPS protocol and the browsers support to the XMLHttpRequest interface and the fetch () API to execute HTTP request. The new HttpClient service is included in the HttpClientModule and it used to initiate HTTP request and responses in angular apps. ü   Stayed Informed - What's New in HttpClient and HttpClientModule in Angular? The HttpClient is more modern and easy to use alternative of HTTP. Also the HttpClient is use the XMLHttpRequest browser API to execute HTTP request and it specific the HTTP request type’s i.e. ü   Get() ü   Post() ü   Put() ü   Delete() ü   Patch() ü   Head() ü   Jsonp() Before use the  HttpClient , we need to import in the  HttpClientModule  into your AppModule. Once you import HttpClientModule into your AppModule, you can inject HttpClient into your components and services. HttpClientModule - ...