Implementing File Upload with Angular Components

Angular is a widely popular framework that uses HTML and TypeScript to build single-page client applications. Angular is powerful, modern, and has a capable ecosystem that makes it a go-to platform for web, mobile, and desktop-native supports. Excellent User Interface and effective content management systems (CMS) are essential aspects of any application. File uploads contribute to maintain an effective CMS and hugely influence user productivity. To upload a file, you should know how to create file upload components. There are three crucial components that you should set up to upload files in Angular. I would also like to mention that creating file upload components is a little tricky. You have to deal with files that are in TypeScript, and you also need to write service. You can use the service to hold files of various sizes and collaborate with API to pass it.

In this blog, I will take you through sending a file to the back end in Angular. Before that, let’s go through the three components necessary to carry out the file upload in Angular:

1. FormData: With the help of FormData API, you can create a set of key/value elements. It lets you correspond to the form fields and the values as well. The Angular HttpClient allows you to send data to the server. Consider FormData instance equivalent to an HTML form that can be sent with the help of form-data encoding. Following is the example of how to create a FormData object:

const formData = new FormData();

2. HttpClientModule: It is a service module provided by Angular that allows you to perform the HTTP requests. You should import the HTTP module to use the HTTP service. This HTTPClientModule comprises APIs that provide front-end access to the server so that the data can be downloaded from or uploaded to the backend.

Let’s consider an example to see how the HttpClientModule works:…read more.