JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://openlayers.org/api/OpenLayers.js"></script>
<div id="map" style="width:550px;height:450px;"></div>

JavaScript

var proj_4326 = new OpenLayers.Projection('EPSG:4326');
var proj_900913 = new OpenLayers.Projection('EPSG:900913');
map = new OpenLayers.Map({
    div: "map",
    allOverlays: true,
    units: "mi",
    projection: proj_900913,
    'displayProjection': proj_4326
});

var osm = new OpenLayers.Layer.OSM();
map.addLayers([osm]);

var lonlat = new OpenLayers.LonLat(-80.0286,40.53194).transform(map.displayProjection, map.projection);

map.setCenter(lonlat, 9);

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