This example displays a Street View panorama, alongside a window that tracks
several types of data associated with Street View events. This data can be
tracked to better understand the performance of the underlying
[`StreetViewPanorama`](https://developers.google.com/maps/documentation/javascript/reference/street-view.md.txt#StreetViewPanorama)
object.

Read the
[documentation](https://developers.google.com/maps/documentation/javascript/streetview.md.txt#StreetViewEvents).
<iframe src="https://geo-devrel-javascript-samples.web.app/samples/streetview-events/app/dist/" allow="fullscreen; "></iframe>

### TypeScript

```typescript
function initPano() {
  const panorama = new google.maps.StreetViewPanorama(
    document.getElementById("pano") as HTMLElement,
    {
      position: { lat: 37.869, lng: -122.255 },
      pov: {
        heading: 270,
        pitch: 0,
      },
      visible: true,
    }
  );

  panorama.addListener("pano_changed", () => {
    const panoCell = document.getElementById("pano-cell") as HTMLElement;

    panoCell.innerHTML = panorama.getPano();
  });

  panorama.addListener("links_changed", () => {
    const linksTable = document.getElementById("links_table") as HTMLElement;

    while (linksTable.hasChildNodes()) {
      linksTable.removeChild(linksTable.lastChild as ChildNode);
    }

    const links = panorama.getLinks();

    for (const i in links) {
      const row = document.createElement("tr");

      linksTable.appendChild(row);

      const labelCell = document.createElement("td");

      labelCell.innerHTML = "<b>Link: " + i + "</b>";

      const valueCell = document.createElement("td");

      valueCell.innerHTML = links[i].description as string;
      linksTable.appendChild(labelCell);
      linksTable.appendChild(valueCell);
    }
  });

  panorama.addListener("position_changed", () => {
    const positionCell = document.getElementById(
      "position-cell"
    ) as HTMLElement;

    (positionCell.firstChild as HTMLElement).nodeValue =
      panorama.getPosition() + "";
  });

  panorama.addListener("pov_changed", () => {
    const headingCell = document.getElementById("heading-cell") as HTMLElement;
    const pitchCell = document.getElementById("pitch-cell") as HTMLElement;

    (headingCell.firstChild as HTMLElement).nodeValue =
      panorama.getPov().heading + "";
    (pitchCell.firstChild as HTMLElement).nodeValue =
      panorama.getPov().pitch + "";
  });
}

declare global {
  interface Window {
    initPano: () => void;
  }
}
window.initPano = initPano;
```

> [!NOTE]
> **Note:** Read the [guide](https://developers.google.com/maps/documentation/javascript/using-typescript.md.txt) on using TypeScript and Google Maps.

### JavaScript

```javascript
function initPano() {
  const panorama = new google.maps.StreetViewPanorama(
    document.getElementById("pano"),
    {
      position: { lat: 37.869, lng: -122.255 },
      pov: {
        heading: 270,
        pitch: 0,
      },
      visible: true,
    },
  );

  panorama.addListener("pano_changed", () => {
    const panoCell = document.getElementById("pano-cell");

    panoCell.innerHTML = panorama.getPano();
  });
  panorama.addListener("links_changed", () => {
    const linksTable = document.getElementById("links_table");

    while (linksTable.hasChildNodes()) {
      linksTable.removeChild(linksTable.lastChild);
    }

    const links = panorama.getLinks();

    for (const i in links) {
      const row = document.createElement("tr");

      linksTable.appendChild(row);

      const labelCell = document.createElement("td");

      labelCell.innerHTML = "<b>Link: " + i + "</b>";

      const valueCell = document.createElement("td");

      valueCell.innerHTML = links[i].description;
      linksTable.appendChild(labelCell);
      linksTable.appendChild(valueCell);
    }
  });
  panorama.addListener("position_changed", () => {
    const positionCell = document.getElementById("position-cell");

    positionCell.firstChild.nodeValue = panorama.getPosition() + "";
  });
  panorama.addListener("pov_changed", () => {
    const headingCell = document.getElementById("heading-cell");
    const pitchCell = document.getElementById("pitch-cell");

    headingCell.firstChild.nodeValue = panorama.getPov().heading + "";
    pitchCell.firstChild.nodeValue = panorama.getPov().pitch + "";
  });
}

window.initPano = initPano;
```

> [!NOTE]
> **Note:** The JavaScript is compiled from the TypeScript snippet.

### CSS

```css
/* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
#map {
  height: 100%;
}

/* 
 * Optional: Makes the sample page fill the window. 
 */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

#floating-panel {
  position: absolute;
  top: 10px;
  left: 25%;
  z-index: 5;
  background-color: #fff;
  padding: 5px;
  border: 1px solid #999;
  text-align: center;
  font-family: "Roboto", "sans-serif";
  line-height: 30px;
  padding-left: 10px;
}

#pano {
  width: 50%;
  height: 100%;
  float: left;
}

#floating-panel {
  width: 45%;
  height: 100%;
  float: right;
  text-align: left;
  overflow: auto;
  position: static;
  border: 0px solid #999;
}
```

### HTML

```html
<html>
  <head>
    <title>Street View Events</title>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="pano"></div>
    <div id="floating-panel">
      <table>
        <tr>
          <td><b>Position</b></td>
          <td id="position-cell">&nbsp;</td>
        </tr>
        <tr>
          <td><b>POV Heading</b></td>
          <td id="heading-cell">270</td>
        </tr>
        <tr>
          <td><b>POV Pitch</b></td>
          <td id="pitch-cell">0.0</td>
        </tr>
        <tr>
          <td><b>Pano ID</b></td>
          <td id="pano-cell">&nbsp;</td>
        </tr>
        <table id="links_table"></table>
      </table>
    </div>

    <!-- 
      The `defer` attribute causes the script to execute after the full HTML
      document has been parsed. For non-blocking uses, avoiding race conditions,
      and consistent behavior across browsers, consider loading using Promises. See
      https://developers.google.com/maps/documentation/javascript/load-maps-js-api
      for more information.
      -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initPano&v=weekly"
      defer
    ></script>
  </body>
</html>
```

### Clone Sample


Git and Node.js are required to run this sample locally. Follow these [instructions](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm) to install Node.js and NPM. The following commands clone, install dependencies and start the sample application.

```javascript
  git clone -b sample-streetview-events https://github.com/googlemaps/js-samples.git
  cd js-samples
  npm i
  npm start
```


Other samples can be tried by switching to any branch beginning with `sample-SAMPLE_NAME`.

```javascript
  git checkout sample-SAMPLE_NAME
  npm i
  npm start
```