Using js fetch to GET json data

fetch-json.js

// Voila the all new JS fetch
fetch('https://bloody-data-json-url', { 
    method: 'GET',
    // Ask API to respond with json
    headers: new Headers({
        'Content-Type': 'application/json'
    }),
    mode: 'cors',
    cache: 'default'
})

// transform response
.then(res => res.json())

.catch(error => console.error('Error:', error))
.then(data => console.log('Success:', data));