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Added a button to relocate using the navigator's geolocation service. #145

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Added a button to relocate using the navigator's geolocation service. #145

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25 changes: 25 additions & 0 deletions js/geoloc.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,25 @@
if ("geolocation" in navigator) {
document.getElementById('geoloc').style.display = "inline-block";
}

function initGeolocation() {
var onSuccess = function(geoPosition) {
var minDistance, nearestLocation, currentDistance, locations = getLocations();
var lat1 = geoPosition.coords.latitude;
var lon1 = geoPosition.coords.longitude;
var squaredDistanceFromCurrent = function(location) {
return Math.pow(lat1 - location.lat, 2) + Math.pow(lon1 - location.lon, 2);
};
for (var locationName in locations) {
currentDistance = squaredDistanceFromCurrent(locations[locationName]);
if (minDistance == undefined || currentDistance < minDistance) {
minDistance = currentDistance;
nearestLocation = locationName;
}
}
if (nearestLocation) {
window.location.href = "http://" + nearestLocation + ".devfriendlyplaces.net";
}
};
navigator.geolocation.getCurrentPosition(onSuccess);
}
3 changes: 3 additions & 0 deletions locations.html
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,8 @@
<body>
<section class="container">
<h1>DEV FRIENDLY PLACES</h1>
<button id="geoloc" style="display:none" onclick="initGeolocation()">Locate me</button>

<p>Pick a city and find a place for coding</p>

<div class="github-fork-ribbon-wrapper right">
Expand All @@ -23,6 +25,7 @@ <h1>DEV FRIENDLY PLACES</h1>
<script type="text/javascript">
buildLocations();
</script>
<script src="/js/geoloc.js"></script>
</section>
</body>
</html>