![]() ![]() ![]() Now that we know how all the standard file upload browser functionality works, let's see how can we build a nice Angular component to encapsulate it. ![]() Instead, we will need to trigger an HTTP request ourselves, in response to the change event. When the change event gets triggered, the file is not automatically uploaded to the backend by the browser. Here is the output that we see on the console after the user selects a file: This event will then contain the list of files that the user selected on the target.files property. ![]() When the user chooses a file using the file upload dialog, an event of typeĬhange will be emitted. This is default browser behavior that can't be changed, and that is why we usually don't see this plain file input on all the interfaces that we use daily, like Gmail, etc.īecause this file input is impossible to style properly, the most common option is to actually never show it to the end-user, as we will see. Some styles applied to it can't be changed, and we can't even change the text on the button! The problem with this plain file input is that by default it's very hard to style. With this file input box, you can select a file from your file system, and then with a bit of Javascript, you can already send it to a backend. This input will allow the user to open a browser file selection dialog and select one or more files (by default, only one file). The key ingredient for uploading files in a browser is a plain HTML input of type file: In order to build an Angular file upload component, we need to first understand how to upload files in plain HTML and Javascript only, and take it from there. So without further ado, let's get started learning how to build an Angular file upload component! How to Upload Files in a Browser
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March 2023
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