React POST request

POST request using fetch API: To do a POST request we need to specify additional parameters with the request such as method, headers, etc . In this example, we’ll do a POST request on the same JSONPlaceholder and add a post in the posts. It’ll then return the same post content with an ID.

By design, the POST request method requests that a web server accept the data enclosed in the body of the request message, most likely for storing it . It is often used when uploading a file or when submitting a completed web form. In contrast, the HTTP GET request method retrieves information from the server.

First, we specify the ‘method’, POST. Then, we specify the value of ‘mode’. Since the Flask server is being hosted on a different port on our machine (8080) than the React app, we have to specify the value as ‘cors’. All this means is that data will be sent across origins.

How to Make REST API Calls in React Native