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 type of <input> creates input fields that should contain a numeric value?
type="text" type="number" type="date"
<input type="number" name="points" min="5" max="80" />
Which CSS property allows to change the transparency of an element?
font-style opacity color
#id {
  filter:alpha(opacity=40);    /* for IE */
  opacity:0.4;
}
Click on the function that formats a number to specified number of characters.
toPrecision() exp() toFixed()
var num = 12.34567;
alert( num.toPrecision(3) );       // 12.3
Which function randomizes the order of the elements into an array?
natsort() shuffle() sort()
$lang =[10=>"PHP", 20=>"JavaScript", "site"=>"coursesweb.net");
shuffle($lang);
var_export($lang);     // array (0=>"coursesweb.net", 1=>"PHP", 2=>"JavaScript")
Show Google Map image with Geolocation JavaScript object

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