I was using the following code to get my current location. But the longitude and latitude generated was not at all accurate. It was showing a location about 700 Kms away from my location. How can I make it accurate?
<script>
var x = document.getElementById("demo");
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition);
} else {
x.innerHTML = "Geolocation is not supported by this browser.";
}
}
function showPosition(position) {
x.innerHTML = "Latitude: " + position.coords.latitude +
"<br>Longitude: " + position.coords.longitude;
}
</script>
Or you could try a different geocoding provider.
There are lots to choose from:
https://smartystreets.com
http://geocoder.us
http://geoservices.tamu.edu/Services/Geocode/
Disclaimer: I'm a developer at SmartyStreets.
Probably you are not using GPS. If you aren't, then navigator.geolocation.getCurrentPosition returns a position based on your ISP
Related
I have below mentioned JSFidle.But it's not working.Can you say why's that ?
Note: I want to run it on JSFiddle.It should show the Latitude and Longitude.
JSFiddle Geolocation
var x = document.getElementById("demo");
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition);
} else {
x.innerHTML = "Geolocation is not supported by this browser.";
}
}
function showPosition(position) {
x.innerHTML="Latitude: " + position.coords.latitude +
"<br>Longitude: " + position.coords.longitude;
}
Because you have your JavaScript set to run in the load event (the second drop down on the left). The function getLocation only exists within the scope of that load handler, not in the global scope you're trying to call it from.
It works fine if you change it to 'No wrap - in <body>'
I got the HF HTML5 book , and when i reached to the chapter about geolocation and typed the code in , it doesn't work , i tried enabling the geo-location features in preferences but still no change , any suggestions?
The JS:
window.onload = getMyLocation;
function getMyLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(displayLocation);
} else {
alert("Oops, no geolocation support");
}
};
function displayLocation(position) {
var latitude = position.coords.latitude;
var longitude = position.coords.longitude;
var div = document.getElementById("location");
div.innerHTML = "You are at Latitude: " + latitude + ", Longitude: " + longitude;
};
Problem was solved.
I found out that it's a bug from chrome , every file:// has it , you can't do it without a server like WAMP , or you can use an other browser.
Try binding event handler like this:
window.onload = new function() { getMyLocation() };
Here is the fiddle.
I'm developing html5 windows phone 8 application and I've run into problem: geolocation doesn't work for me. I have WebBrowser.IsGeolocationEnabled property set to true and in app manifest ID_CAP_LOCATION is also checked. Hovewer even with the geolocation code copy-pasted from various HTML5 learning portals I'm still getting an error telling that site doesn't have geolocation permission.
Thanks for any help
var watchId = navigator.geolocation.watchPosition(scrollMap, handleError);
function scrollMap(position) {
myLoc.setLatLng([position.coords.latitude, position.coords.longitude]);
}
function handleError(error) {
myLoc.setLatLng([0, 0]);
}
I had the same issue, but solved it by totally rewriting my code - simplifying it:
var lng, lat;
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition);
}
else { alert("Geolocation is not supported by this browser."); }
}
function showPosition(position) {
alert("Latitude: " + position.coords.latitude +
"\nLongitude: " + position.coords.longitude);
lng = position.coords.longitude;
lat = position.coords.latitude;
}
How can I save lat and lng values to variables using HTML5 geolocation API?
This is my code, copied from w3schools. How can I save coordinates to variables like var x= position.coords.latitude; and var y= position.coords.longitude; instead of just showing the values like the code is doing right now? I am beginner with javascript so I don't know how to do this
<!DOCTYPE html>
<html>
<body>
<p id="demo">Click the button to get your coordinates:</p>
<button onclick="getLocation()">Try It</button>
<script>
var x=document.getElementById("demo");
window.onload = function getLocation()
{
if (navigator.geolocation)
{
navigator.geolocation.watchPosition(showPosition);
}
else{x.innerHTML="Geolocation is not supported by this browser.";}
}
function showPosition(position)
{
x.innerHTML="Latitude: " + position.coords.latitude +
"<br />Longitude: " + position.coords.longitude;
}
</script>
</body>
</html>
And in my application I need to send values of those variables to server every minute. Would it be better to do the geolocation with watchposition or execute function that does getcurrentposition every minute?
Adding them to variables is as easy as:
var lat = position.coords.latitude;
var lon = position.coords.longitude;
OR as an object:
var coords = {lat: "", lon: ""};
Then to use the object in your code:
function showPosition(position)
{
coords.lat = position.coords.latitude;
coords.lon = position.coords.longitude;
x.innerHTML="Latitude: " + coords.lat +
"<br />Longitude: " + coords.lon;
}
As for sending the variables to a server this depends on what your serverside technology is but you will find many examples on google.
function sendToServer(){
// here you can reuse the object to send to a server
console.log("lat: " + coords.lat);
console.log("lon: " + coords.lon);
}
Hitting a page with the follow script displays:
lat: undefined
lon: 51.5001524
Why is it that while lat is undefined, lon is not?
A working example can be found here.
Pull up your web console and see for yourself!
$(document).ready(function(){
var geocoder;
function codeAddress()
{
geocoder = new google.maps.Geocoder();
var address = 'London, England';
geocoder.geocode({'address': address}, function(results, status)
{
if (status == google.maps.GeocoderStatus.OK)
{
lat = results[0].geometry.location.Ia;
lon = results[0].geometry.location.Ja;
console.log("lat: " + lat);
console.log("lon: " + lon);
}
});
}
codeAddress();
});
</script>
</head>
<body>
</body>
</html>
While we're at it - what is the historical significance of Ia and Ja? I presume it relates to the Cartesian unit vectors i and j (predominately used in Engineering) though I'm not sure.
I found other examples online who use .lat for .Ia and .lng for .Ja
These, however, are returning in the console:
function () {
return this[a];
}
Just need a kick in the right direction.
Thank you.
I would use lat() and lng():
var lat = results[0].geometry.location.lat();
var lng = results[0].geometry.location.lng();
This is a designed behaviour of the geocoder: google shifts the identifiers in
geometry.location.Ia;
geometry.location.Ja;
on a weekly basis, i.e. from above to
geometry.location.Ja;
geometry.location.Ka;
and so on, so it is not possible to refer by id to the geocoder result object.
Chances are Google are using a javascript minifier (e.g. http://jscompress.com/) which renames all variables - hence they're subject to change on every build.