JavaScript ES6 standard for getting json data from a URL in this case a Gist with famous Arnold Schwarzenegger film quotes

RandomQuote.js

        // Get random quote
        document.getElementById("newQuote").onclick = getQuotes;
        function fetchQuotes(callback) {
            // arnold json gist
            const endpoint =
                'https://gist.githubusercontent.com/spences10/ceee092f6fed36559036c94682b7a5f7/raw/7a27570759834ee454ee380ca42ebd47dc55e932/arnold_quotes.json'
            // fetch gist
            fetch(endpoint)
                .then(blob => blob.json())
                .then(data => callback(data));
        }
        // callback for quotes promise
        function getQuotes() {
            fetchQuotes(function (quotes) {
                // get random quote from JSON 
                const quoteID = getRandomInt(1, 100);
                // get json data
                var quoteStr = quotes[quoteID].quote
                var movieStr = quotes[quoteID].movie
                var characterStr = quotes[quoteID].character
                
                alert(quoteStr);
            })
        }
        function getRandomInt(min, max) {
            return Math.floor(Math.random() * (max - min + 1)) + min;
        }