This gist is part of an article and may not covey the actual message on it's own. Link to article: https://medium.com/@ejjay/a-short-ajax-story-on-error-handlers-8baeeccbc062

a-short-ajax-error-story-1-of-4.js

import axios from 'axios';
import {notifier} from './util';


// Fetch some missing information
axios.get('/api/articles/not-found').then(resp => {
    // So something with article information
}).catch(error => {
    const statusCode = error.response ? error.response.status : null;

    // 404 - not found
    if (statusCode === 404) {
        notifier.error('The requested article does not exist or has been deleted')
    }

    if (statusCode === 401) {
        notifier.error('Please login to view this article')
    }
})


// Fetch some missing information
axios.get('/api/users/not-found').then(resp => {
    // So something with user information
}).catch(error => {
    const statusCode = error.response ? error.response.status : null;

    if (statusCode === 404) {
        notifier.error('The requested user does not exist or has been deleted')
    }

    if (statusCode === 401) {
        notifier.error('Please login to view this user')
    }
})