reactjsHow do I use FormData with ReactJS?

FormData is a global JavaScript object that can be used to construct a set of key/value pairs which can be sent using XMLHttpRequest. It is used to send form data to a server in an asynchronous way.

In ReactJS, FormData can be used to send form data to a server. The following example shows how to create a FormData object and submit it using the fetch API:

const formData = new FormData();
formData.append('name', 'John Doe');
formData.append('age', '20');

fetch('/api/submitFormData', {
  method: 'POST',
  body: formData
})
.then(response => response.json())
.then(data => console.log(data));

The code above creates a FormData object and adds two key/value pairs to it. It then sends the FormData object to the server in an asynchronous way using the fetch API.

Here is a list of the parts of the code above and their explanations:

1. const formData = new FormData(); - This creates a new FormData object.
2. formData.append('name', 'John Doe'); - This adds a key/value pair to the FormData object.
3. fetch('/api/submitFormData', { - This sends the FormData object to the server using the fetch API.
4. method: 'POST' - This specifies that the request should be sent using the POST method.
5. body: formData - This specifies that the FormData object should be sent as the request body.

For more information, see MDN's documentation on FormData and React's documentation on Fetch API.

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