How do I parse a web page from its URL using JavaScript?

I’m trying to use ZenQuotes to get a random quote.

When I click on this link: https://zenquotes.io/api/random/

I get redirected to a page with a random quote in it. How can I get this text and put it into JSON in JavaScript?

I found this on a website to do a HTTP request:

const Http = new XMLHttpRequest();
const url='https://zenquotes.io/api/quotes/';
Http.open("GET", url);
Http.send();

Http.onreadystatechange = (e) => {
  console.log(Http)
}

However, I’m not sure what I’m looking for.