{ nodes: { start: { text: "<p>You are a bare concrete bunker standing in front of a shiny red button.</p>", options: [{ label: "Press the button!", target: "boom", }] }, boom: { text:"<p>BOOOOOOM!!!</p> <p>Everything explodes, probably shouldn't have pressed that button.</p>", onShow: function() { if (!window.confirm("Are you sure?")) { return "phew"; } } }, phew: { text: "<p>Yeah, probably best not to play with it.</p>" } } }