jmmarco/index.html

## index.html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>React Google Maps</title>
  <style>
    html, body {
      height: 100%;
      margin: 0;
      padding: 0;
    }

    #root {
      min-height: 100vh;
    }

    .container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      font-family: Arial, Helvetica, sans-serif;
    }

    #map {
      height: 100vh;
    }

    #text {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-size: 2rem;
      text-align: center;
      padding: 0 10px;
    }

    a {
      text-decoration: none;
    }
  </style>
  <script crossorigin src="https://unpkg.com/react@16/umd/react.development.js"></script>
  <script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
  <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
  <script src="http://maps.googleapis.com/maps/api/js?libraries=places"></script>
</head>
<body>
  <div id="root"></div>

  <script type="text/babel">

class App extends React.Component {
  constructor(props){
    super(props)
    this.state = {
      // no state for now..
    }

    // Use createRef() to create a reference to the DOM node we want
    // Learn more about Refs for React here: https://reactjs.org/docs/refs-and-the-dom.html#callback-refs
    this.myMapContainer = React.createRef()
  }

  componentDidMount() {
    // Instead of using document.getElementById, use the ref we created earlier to access the element
    let map = new google.maps.Map(this.myMapContainer.current, {
      center: { lat: -34.9973268, lng: -58.582614 },
      scrollwheel: false,
      zoom: 4
    });
  }

  render() {
    return (
      <div className="container">
        <div ref={this.myMapContainer} id="map"></div>
        <div id="text">
          <p>
            Google Maps now requires the use of a valid API Key.
            That's why you see the popup window 'This page can't load Google Maps correctly.'
          </p>
          <a href="https://developers.google.com/maps/documentation/javascript/get-api-key">Go get one!</a>
        </div>
      </div>
    )
  }
}

ReactDOM.render(<App/>, document.getElementById('root'))

  </script>

</body>
</html>
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>React Google Maps</title>
	<style>
	html, body {
	height: 100%;
	margin: 0;
	padding: 0;
	}

	#root {
	min-height: 100vh;
	}

	.container {
	display: grid;
	grid-template-columns: 1fr 1fr;
	font-family: Arial, Helvetica, sans-serif;
	}

	#map {
	height: 100vh;
	}

	#text {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	font-size: 2rem;
	text-align: center;
	padding: 0 10px;
	}

	a {
	text-decoration: none;
	}
	</style>
	<script crossorigin src="https://unpkg.com/react@16/umd/react.development.js"></script>
	<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
	<script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
	<script src="http://maps.googleapis.com/maps/api/js?libraries=places"></script>
	</head>
	<body>
	<div id="root"></div>

	<script type="text/babel">

	class App extends React.Component {
	constructor(props){
	super(props)
	this.state = {
	// no state for now..
	}

	// Use createRef() to create a reference to the DOM node we want
	// Learn more about Refs for React here: https://reactjs.org/docs/refs-and-the-dom.html#callback-refs
	this.myMapContainer = React.createRef()
	}

	componentDidMount() {
	// Instead of using document.getElementById, use the ref we created earlier to access the element
	let map = new google.maps.Map(this.myMapContainer.current, {
	center: { lat: -34.9973268, lng: -58.582614 },
	scrollwheel: false,
	zoom: 4
	});
	}

	render() {
	return (
	<div className="container">
	<div ref={this.myMapContainer} id="map"></div>
	<div id="text">
	<p>
	Google Maps now requires the use of a valid API Key.
	That's why you see the popup window 'This page can't load Google Maps correctly.'
	</p>
	<a href="https://developers.google.com/maps/documentation/javascript/get-api-key">Go get one!</a>
	</div>
	</div>
	)
	}
	}

	ReactDOM.render(<App/>, document.getElementById('root'))

	</script>

	</body>
	</html>