Axios Post FormData - Javascript

Axios is a popular promise-based HTTP client for JavaScript. It allows developers to make HTTP requests to retrieve and send data from and to servers in an easy-to-use manner. In this tutorial, we will see how to use Axios to post form data to a server.

Prerequisites

• Basic knowledge of JavaScript and HTML
• Axios installed in your project. You can install it using the following command:

npm install axios

Sending Form Data using Axios

To send form data, we need to create an instance of the FormData class in JavaScript. The FormData class is built-in and allows us to create a key-value map from form data that can be used to send it via HTTP.

Here's an example of how to use Axios to send form data:

const axios = require('axios');

const formData = new FormData();
formData.append('name', 'John');
formData.append('email', 'john@example.com');
formData.append('file', file);

axios.post('/api/formdata', formData, {
    headers: {
        'Content-Type': 'multipart/form-data'
    }
})
.then((response) => {
    console.log(response.data);
})
.catch((error) => {
    console.log(error);
});

We start by creating an instance of the FormData class and appending the data to it. In this case, we are adding a name, email, and file to the form data object. After that, we use the axios post method to send the data to the server. We pass the form data object and the headers with the 'Content-Type' set to 'multipart/form-data'. The response is logged to the console if the post request is successful, or the error if the request fails.

Code Explanation

• We require the axios package.
• We create an instance of the FormData class and append the data to it.
• We use axios to post the data to the server with the appropriate headers.
• We log the response to the console if the post request is successful or the error if the request fails.

Conclusion

By using Axios to post form data, we can send data to servers with ease. We create an instance of the FormData class and append the data to it. With the help of the axios post method, we can send the form data to the server with the appropriate headers.