How do you correctly set options and axios headers when making a POST request?

General Discussions
1

I’m using Axios to send a POST request and want to include custom parameters and headers.

What’s the right way to structure the request so both params and axios headers are applied properly? Should they go inside a single config object or be passed separately?

2

I’ve been working with Axios for a while, and I’ve found that when setting headers and options for POST requests, it’s super important to structure it like this:


axios.post(url, data, {
  headers: { 'Content-Type': 'application/json' },
  params: { userId: 123 }
});

So, you’re passing both the headers and params inside a single config object (the third argument in .post()). Took me a bit to figure out that passing them separately doesn’t quite work as expected! Just remember to keep things in the right place, makes life easier.

3

Ah, I ran into the same thing when I was starting out! With Axios, when you make a POST request, the config object (where you put headers and params) needs to be the third argument. If you mix it with the data payload, things get tricky! Here’s the approach that worked best for me:

const data = { name: "John" };
const config = {
  headers: { Authorization: "Bearer token" },
  params: { verbose: true }
};

axios.post('/api/submit', data, config);

Keeps everything clean and predictable, right? It’s definitely helped me avoid confusion when working with the setup.

4

Yep, it took me a minute to understand that the params and headers aren’t part of the data payload. They’re actually passed in the config object, which comes after the data. This is where it differs from GET requests, where config is the second argument. So, for POST requests, it should always look like this:

axios.post(url, data, config);

Make sure you place headers like Content-Type or any authentication tokens in the config, and it’ll work smoothly. Trust me, once you get this structure down, everything falls into place!