JSFiddle - React, Tailwind, and code Playground
HTML
<h3>Address Data</h3>
<span data-bind='text: markets.marketDetails().Address'></span>
JavaScript
var self = {};
self.markets = {
marketCollection: ko.observableArray([]),
selectedItem: ko.observableArray([]),
marketDetails: ko.observable({ Address: 'this should be bound on load' }),
selectedItemName:ko.observable('No Market Selected')
};
ko.applyBindings(self);