How do I set custom headers in Axios?

How do I set custom headers in Axios?

You can set custom headers in Axios by using the headers property in your request configuration. For example:

axios.get('/api/data', {
  headers: {
    'Authorization': 'Bearer token',
    'Custom-Header': 'value'
  }
});

Can I set headers globally for all requests?

Yes, you can set default headers globally by using axios.defaults.headers. For example:

axios.defaults.headers.common['Authorization'] = 'Bearer token';

What if I want to override a header for a specific request?

You can override a global header by specifying a different value in the request configuration. It will take precedence over the default. For example:

axios.get('/api/data', {
  headers: {
    'Authorization': 'Bearer newToken'
  }
});

Are there any headers that I shouldn't set?

Yes, avoid setting headers that are automatically managed by the browser, such as Content-Length, Host, and User-Agent, as they can lead to unexpected behavior.