JAVASCRIPT

axios.headers.common

// Set authorization headers on axios
axios.defaults.headers.common['Authorization'] = AUTH_TOKEN;

axios get with headers

let auth = ``; //auth key
let url = ``; //api url

const axios = require(`axios`);
axios({
    method: 'get',
    url: url,
    headers: {
        "Authorization": auth
    },
}).then(function (res) {
    console.log(res.data)
});

headers in axios.get

const axios = require('axios');

// httpbin.org gives you the headers in the response
// body `res.data`.
// See: https://httpbin.org/#/HTTP_Methods/get_get
const res = await axios.get('https://httpbin.org/get', {
  headers: {
    'Test-Header': 'test-value'
  }
});

res.data.headers['Test-Header']; // "test-value"