JSFiddle - React, Tailwind, and code Playground

JavaScript

$.ajax({
    url: "http://api.flickr.com/services/rest/?method=flickr.photos.getSizes&format=json&api_key=708f179518b2093d23f0aef284b565a4&photo_id=6115633659&jsoncallback=?",
    type: "GET",
    cache: true,
    dataType: 'jsonp',
    success: function(data) {

        var sizelist = data.sizes.size;
        for (var i = 0; i < sizelist.length; i++) {
            if (sizelist[i].label == 'Original') largeSRC = sizelist[i].source;
        }

        alert(largeSRC);

    }
});