how does axios.all work code example

Example 1: axios get

const axios = require('axios');

// Make a request for a user with a given ID
axios.get('/user?ID=12345')
  .then(function (response) {
    // handle success
    console.log(response);
  })
  .catch(function (error) {
    // handle error
    console.log(error);
  })
  .then(function () {
    // always executed
  });

// Optionally the request above could also be done as
axios.get('/user', {
    params: {
      ID: 12345
    }
  })
  .then(function (response) {
    console.log(response);
  })
  .catch(function (error) {
    console.log(error);
  })
  .then(function () {
    // always executed
  });  

// Want to use async/await? Add the `async` keyword to your outer function/method.
async function getUser() {
  try {
    const response = await axios.get('/user?ID=12345');
    console.log(response);
  } catch (error) {
    console.error(error);
  }
}

Example 2: uses of axios.all

import axios from 'axios';

let one = "https://api.storyblok.com/v1/cdn/stories/health?version=published&token=wANpEQEsMYGOwLxwXQ76Ggtt"
let two = "https://api.storyblok.com/v1/cdn/datasources/?token=wANpEQEsMYGOwLxwXQ76Ggtt"
let three = "https://api.storyblok.com/v1/cdn/stories/vue?version=published&token=wANpEQEsMYGOwLxwXQ76Ggtt"

const requestOne = axios.get(one);
const requestTwo = axios.get(two);
const requestThree = axios.get(three);

axios.all([requestOne, requestTwo, requestThree]).then(axios.spread((...responses) => {
  const responseOne = responses[0]
  const responseTwo = responses[1]
  const responesThree = responses[2]
  // use/access the results 
})).catch(errors => {
  // react on errors.
})