JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://maps.google.com/maps/api/js?v=3&amp;amp;sensor=false"></script>
<script src="http://openlayers.org/dev/OpenLayers.js"></script>
<script src="http://openlayers.org/dev/examples/all-overlays-google.js"></script>
<script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
<!DOCTYPE html>
<html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <meta name="apple-mobile-web-app-capable" content="yes">
        <title>OpenLayers All Overlays with Google and OSM</title>
        <link rel="stylesheet" href="http://openlayers.org/dev/theme/default/style.css" type="text/css">
        <link rel="stylesheet" href="http://openlayers.org/dev/examples/style.css" type="text/css" />
        <script src="http://maps.google.com/maps/api/js?v=3&amp;sensor=false"></script>
        <script src="http://openlayers.org/dev/OpenLayers.js"></script>
        <script src="http://openlayers.org/dev/examples/all-overlays-google.js"></script>
      	<script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
        <script>
            var measureControl = new OpenLayers.Control.Measure(
    OpenLayers.Handler.Path,
    {
        immediate: true,
        persist: false
    }
);

var lastMeasure = 0.0;

function measurementToolActivated() {
    lastMeasure = 0.0;
}

function handleFinalMeasurement(event) {
    var units = event.units;
    var measure = event.measure;
    var out = "measure: " + measure.toFixed(3) + " " + units;
    if (lastMeasure > 0) {
        out += "    last segment: " + (measure-lastMeasure).toFixed(3) + " " + units;
    }
    lastMeasure = 0.0;  
    $('#Message').html(out);
}

function handlePartialMeasurement(event) {
    var units = event.units;
    var measure = event.measure;
    var out = "measure: " + measure.toFixed(3) + " " + units;
    if (lastMeasure > 0) {
        out += "    last...