In this step-by-step guide we will build a ToolJet application that harnesses the power of the **JavaScript Geolocation API** to retrieve the user's location. The Geolocation API offers access to various geographical data associated with a user's device, utilizing methods such as GPS, WIFI, IP Geolocation, and more.
:::info
To uphold user privacy, the Geolocation API requests permission before locating the device. Upon permission, you gain access to data like latitude, longitude, altitude, and speed.
<imgstyle={{border:'0',marginBottom:'15px',borderRadius:'5px',boxShadow:'0px1px3pxrgba(0,0,0,0.2)'}}className="screenshot-full"src="/img/how-to/access-location/newapp.png"alt="How to: Access User's Location"/>
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2. In the app editor, navigate to the query panel at the bottom and create a **[RunJS query](/docs/data-sources/run-js/#runjs-query-examples)** by selecting **Run JavaScript Code** as the datasource:
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<imgstyle={{border:'0',marginBottom:'15px',borderRadius:'5px',boxShadow:'0px1px3pxrgba(0,0,0,0.2)'}}className="screenshot-full"src="/img/how-to/access-location/runjsq.png"alt="How to: Access User's Location"/>
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3. Utilize the following JavaScript code to employ the Geolocation API and retrieve the location:
```js
function getCoordinates() { // Function to get coordinates
return new Promise(function (resolve, reject) { // Promise to get coordinates
navigator.geolocation.getCurrentPosition(resolve, reject); // Get current position
});
}
async function getAddress() { // Function to get address
const position = await getCoordinates(); // Await the coordinates
let latitude = position.coords.latitude; // Get latitude
let longitude = position.coords.longitude; // Get longitude
return [latitude, longitude]; // Return the coordinates
}
return await getAddress(); // Return the address
```
4. Scroll down the query editor and from **Settings** enable the `Run this query on application load?` option. This ensures that the JavaScript query runs each time the app is opened, providing the user's location.
5. Upon clicking **Run**, your browser prompts you to grant permission for the ToolJet app to access your location. Allow this permission to receive location data.
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<imgstyle={{border:'0',marginBottom:'15px',borderRadius:'5px',boxShadow:'0px1px3pxrgba(0,0,0,0.2)'}}className="screenshot-full"src="/img/how-to/access-location/newprompt.png"alt="How to: Access User's Location"/>
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7. Once the query is succesfully run, the coordinates will be returned and displayed in the **Preview** section of query editor. To inspect the data returned by the query, go to the **Inspector** on the left sidebar, expand queries -> `runjs1` (query name), and then examine the **data**. You'll find the coordinates.
<divstyle={{textAlign:'center'}}>
<imgstyle={{border:'0',marginBottom:'15px',borderRadius:'5px',boxShadow:'0px1px3pxrgba(0,0,0,0.2)'}}className="screenshot-full"src="/img/how-to/access-location/newdata.png"alt="How to: Access User's Location"/>
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8. Utilize these coordinates in the **map component** to display the location. Add a map component to the canvas and edit its properties. In the **Initial location** property, enter:
<imgstyle={{border:'0',marginBottom:'15px',borderRadius:'5px',boxShadow:'0px1px3pxrgba(0,0,0,0.2)'}}className="screenshot-full"src="/img/how-to/access-location/newmap.png"alt="How to: Access User's Location"/>
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9. Once the Map component properties are updated, you'll see the location displayed on the **map component**.