How Can I Pass Form Data to Axios When Making API Calls?

Passing Data to Service in Axios

Problem:

To set the boundary in the header, the request component dispatches a form, prepares an API call, and then executes the call. However, accessing the form's boundary value within the Axios instance is challenging. The goal is to pass the form data from the service to the Axios instance.

Solution:

For AJAX requests with specific body formats, the browser runtime determines the appropriate Content-Type header:

• FormData: Multipart/form-data with mime boundary tokens
• URLSearchParams: Application/x-www-form-urlencoded

Axios:

Axios automatically handles data formatting and content-type setting for JSON APIs. However, Avoid using Axios v0.27.1 and v1.0.0 due to known issues.

NodeJS:

• To use Axios with FormData, use a request interceptor or manually merge in the headers.

jQuery $.ajax():

• By default, the application/x-www-form-urlencoded Content-Type is used.
• For automatic Content-Type determination, disable serialization and allow the browser to handle it.

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