Javascript Course

The code snippet presented in this page can be used to add a google map image in web page with the location of the visitor's internet connection, using the geolocation JavaScript object.


Script code

<h4>Example Google Map with Geolocation JavaScript</h4>
<p>Click on this button to show a map with geolocation of your internet connection.</p>

<button id="get_geoloc">Show Geolocation</button>
<div id="geoloc_resp"></div>
<script>
function showGeoLoc(){
 var geoloc_resp = document.getElementById('geoloc_resp'); //element to add geolocation response

 //if the browser not support geolocation, show message
 if(!navigator.geolocation){
 geoloc_resp.innerHTML ='Geolocation is not supported by your browser';
 return;
 }

 geoloc_resp.innerHTML ='LOADING...';

 //get latitude and longitude position
 navigator.geolocation.getCurrentPosition(function(position){
 var latt = position.coords.latitude;
 var long = position.coords.longitude;
 var img_size = {w:400, h:350}; //image size

 //add in #geoloc_resp google map image with location
 geoloc_resp.innerHTML ='Latitude is: '+ latt +'<br>Longitude is: '+ long +'<br><img src="https://maps.googleapis.com/maps/api/staticmap?center='+ latt +','+ long +'&zoom=14&size='+ img_size.w +'x'+ img_size.h +'&markers=color:red|size:mid|'+ latt +','+ long +'" alt="Google map location" width=""'+ img_size.w +'" height="'+ img_size.h +'" />';
 }, function(err){
 //in case or error, show error message and its code
 geoloc_resp.innerHTML ='Unable to retrieve your location.<br>Error code: '+ err.code +'<br>Error message: '+ err.message;
 });
}

//register click event to button to call showGeoLoc() function
var get_geoloc = document.getElementById('get_geoloc');
if(get_geoloc) get_geoloc.addEventListener('click', showGeoLoc);
</script>

Demo

Click on this button to show a map with geolocation of your internet connection.

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which HTML5 tag can be used to embed an external application (SWF, PDF) in web page?
<mark> <embed> <canvas>
<embed src="flash_game.swf" width="450" height="350" />
Which CSS pseudo-element adds a special style to the first line of a text?
:first-letter :before :first-line
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}
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window.location window.self window.status
var url = window.location;
alert(url);
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fopen() file_put_contents() file_get_contents()
$homepage = file_get_contents("http://coursesweb.net/");
echo $homepage;
Show Google Map image with Geolocation JavaScript object

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