How to find position with HTML5 Geolocation?

Javascript Web Development Front End Scripts

HTML5 Geolocation API lets you share your location with your favorite websites. A JavaScript can capture your latitude and longitude and can be sent to backend web server and do fancy location-aware things like finding local businesses or showing your location on a map.

The geolocation APIs work with a new property of the global navigator object ie. Geolocation object.

The getCurrentPosition method retrieves the current geographic location of the device. The location is expressed as a set of geographic coordinates together with information about heading and speed. The location information is returned to a Position object.

Example

You can try to run the following code to find the current location:

<!DOCTYPE HTML>
<html>
   <head>
      <script type = "text/javascript">
         function showLocation(position) {
            var latitude = position.coords.latitude;
            var longitude = position.coords.longitude;
            alert("Latitude : " + latitude + " Longitude: " + longitude);
         }
         function errorHandler(err) {
            if(err.code == 1) {
               alert("Error: Access is denied!");
            }
            else if( err.code == 2) {
               alert("Error: Position is unavailable!");
            }
         }
         function getLocation(){
            if(navigator.geolocation){
            // timeout at 60000 milliseconds (60 seconds)
               var options = {timeout:60000};
               navigator.geolocation.getCurrentPosition(showLocation, errorHandler, options);
            } else {
               alert("Sorry, browser does not support geolocation!");
            }
         }
      </script>
   </head>
   <body>
      <form>
         <input type = "button" onclick = "getLocation();" value = "Get Location"/>
      </form>
   </body>
</html>

Sharon Christine

Published on 24-Apr-2018 11:06:07

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