How to Automatically Include Cookies in Axios Requests?

Automating Cookie Inclusion in Axios Requests

When using Axios to send requests from a client to an Express.js server, it's often necessary to include cookies in the request headers. However, manually adding cookies to each request can be tedious and error-prone. Fortunately, Axios provides a solution to this problem.

To automatically include cookies in Axios requests, you can use the withCredentials property. This property indicates whether or not the request should include credentials (cookies, HTTP Authentication) in its header.

Setting withCredentials Manually

For specific requests, you can set withCredentials directly when making the request:

axios.get('some api url', { withCredentials: true }).then(response => ...

Enabling withCredentials for All Requests

If you want all Axios requests to automatically include cookies, you can set the withCredentials property globally like this:

axios.defaults.withCredentials = true

Creating a Custom Axios Instance with withCredentials

Another option is to create a custom Axios instance with withCredentials enabled for specific requests:

const instance = axios.create({
  withCredentials: true,
  baseURL: BASE_URL
})

instance.get('/todos')

Note:

If you're using a different domain for your client and server, setting withCredentials to true is necessary to allow the server to read the cookies sent by the client.

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