var xhr = new XMLHttpRequest(); xhr.open('GET', 'http://get-current-position.appspot.com', true); xhr.onload = function() { var responseText = xhr.responseText; var coords = JSON.parse(responseText).coords; var image = new Image(); image.src = 'http://maps.googleapis.com/maps/api/staticmap?center=' + coords.latitude + ',' + coords.longitude + '&size=256x256&sensor=false&zoom=12'; document.body.appendChild(image); }; xhr.send();