JSFiddle - React, Tailwind, and code Playground

HTML

<script type="text/javascript" src="http://openlayers.org/dev/OpenLayers.js"></script> 

<div id="map" style="width: 600px; height: 300px; border: 1px solid black"></div>
<div id="info"></div>

JavaScript

var map = new OpenLayers.Map({
    div: "map",
    center: new OpenLayers.LonLat(0, 0),
    minResolution: "auto",
    maxResolution: "auto",
});

map.addControl(new OpenLayers.Control.LayerSwitcher());

var layerOSM = new OpenLayers.Layer.OSM();
map.addLayer(layerOSM);



map.setCenter(new OpenLayers.LonLat(0, 0), 0);