JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

JavaScript

function refresh() {
    $.ajax({
        url: "https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20html%20where%20url%3D'http%3A%2F%2Fwww.timeanddate.com%2Ftime%2Fzones%2Fbst'%20and%20xpath%3D'%2F%2Fspan%5B%40class%3D%22ctm-hrmn%22%5D%20%7C%20%2F%2Fspan%5B%40class%3D%22ctm-sec%22%5D%20%7C%20%2F%2Fp%5B%40class%3D%22ctm-date%22%5D'&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys",
        dataType: 'json',
        success: function(data) {
            var query = data.query.results;
            
            var date = query.p.content;
            var hour = query.span[0].content;
            var second = query.span[1].content;
            
            $('div').text(date + " "+ hour + ":" + second);
        }
    }).then( function() {
        setTimeout(refresh, 1000)
    })
}

refresh();