JSFiddle - React, Tailwind, and code Playground

HTML

<a class="ltwitch" href="#" data-tnick="attackerdota">Aloha</a> (<span>Checking</span>)

JavaScript

jQuery(document).ready(function($) {
    $('.ltwitch').each(function () {
        var tnick = $(this).data('tnick');
        var span = $(this).next();
	    $.getJSON("https://api.twitch.tv/kraken/streams/"+tnick+".json?callback=?", function(c) {
	    	if (c.stream == null) {
    			span.html("Offline");
		    } else {
			    span.html("Online");
		    }
	    });
    });
});