Ultimately, we will create an application that allows clients to pick a stock and watch for changes in the data points related to that stock, such as its price, and to highlight positive or negative changes:
To create the client, our work is minimal. We need to simply poll our server every few seconds or so, updating our interface to reflect any data changes. Let's use jQuery as our AJAX library provider. To fetch JSON from a server using jQuery, you will normally do something like this:
function fetch() { $.getJSON("/service", (data) => { // Do something with data updateDisplay(data); // Call again in 5 seconds setTimeout(fetch, ...
