JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://cdn.leafletjs.com/leaflet-0.4.5/leaflet.js"></script>
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.4.5/leaflet.css">
<link rel="stylesheet" href="code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
 <link rel="stylesheet" href="//code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css">

 
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
<div id="map_canvas"></div>

CSS

html { 
    height: 100% 
}

body { 
    height: 100%; 
    margin: 0; 
    padding 0;
}

#map_canvas {
    height: 100%; 
    width: 100%; 
    position: absolute
}

JavaScript

/// I am using a leaflet JS Fiddle Template was provided by SO User Asad here:
/// http://stackoverflow.com/a/13699060/3679978
/// I THINK I understand the concept he explained about dynamically generating Javascript.


// Load Map stuff.
var map = L.map('map_canvas').setView([51.505, -0.09], 13);
L.tileLayer('http://{s}.tiles.mapbox.com/v3/mapbox.mapbox-light/{z}/{x}/{y}.png', {
    attribution: 'Imagery from <a href="http://mapbox.com/about/maps/">MapBox</a> &mdash; &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>',
    maxZoom: 18,
}).addTo(map);

var marker = L.marker([51.5, -0.09]).addTo(map);

//Creates the div element in jQuery
var container = $('<div/>'); 


// Creates a variable holding html string to go in above container
// Note I made the same image thats going to be enlarged into a smaller 120x90 thumbnail 
var tempimg = '<div id="dialog" style="display: none;"><img id="image" src=""/></div><div class="myImage"><img src="http://www.w3schools.com/images/pulpit.jpg" alt="myimage" width="120" height="90"/></div> Click to enlarge';


// Upon clicking the .myImage Class in the container (which is the thumbnail) Open a jQueryUI Dialog...
container.on('click', '.myImage', function() { $('#dialog').dialog(
//...which upon when it's opened...  
  {open: function(){
///... assign a variable that can acess the div id 'image'...
  imageTag = $('#image'); 
///... and set the image src in #image (note that it'll be the fullsize this time)...
  imageTag.attr("src","http://www.w3schools.com/images/pulpit.jpg");
},closeOnEscape: true});
 });

container.html(tempimg);
// Insert the container into the popup
marker.bindPopup(container[0]);