I want to display on screen the var longitude en latitude but I think that the function is executing last and I'am stuck with the initial values.
The objective is to print on screen the exact values of the geolocation that the browser returns.
Thanks !!!
<!DOCTYPE html>
<head>
<script>
var longitude = "10";
var latitude = "20";
</script>
</head>
<html>
<body onload="getLocation()">
<script>
var longitude = "30";
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position){
latitude = position.coords.latitude;
longitude = position.coords.longitude;
alert('aaab:' +longitude);
});
}else {
alert("Geolocation API is not supported in your browser.");
}
}
</script>
<script>
alert("ccc");
document.write (longitude);
document.write (latitude);
</script>
</body>
</html>
i know that it's working within the function, but there is any way to use those variable outside? I just want to be able to store them in one global variable that cand be called wherever. Thanks
document.write is being executed before your code that updates it is being run. You need to do the document.write in the callback like so:
<!DOCTYPE html>
<head>
<script type='text/javascript'>
var longitude = "10";
var latitude = "20";
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position){
latitude = position.coords.latitude;
longitude = position.coords.longitude;
document.write(latitude+" / "+longitude);
});
}else{
alert("Geolocation API is not supported in your browser.");
}
}
</script>
</head>
<body onload="getLocation()">
</body>
</html>
Try this:
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(displayLocation);
}else {
alert("Geolocation API is not supported in your browser.");
}
}
function displayLocation(position) {
latitude = position.coords.latitude;
longitude = position.coords.longitude;
alert('aaab:' +longitude);
}
The Geolocation Callback probably hasn't been called at the time you write your longitude and latitude. Maybe you can use jQuery to write the correct values to the screen...
<script>
var longitude = "30";
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position){
latitude = position.coords.latitude;
longitude = position.coords.longitude;
//alert('aaab:' +longitude);
// Use jQuery to write your values to the html
$("#longitude").html(longitude);
$("#latitude").html(latitude);
});
}else {
alert("Geolocation API is not supported in your browser.");
}
}
</script>
<html>
...
<body onload="getLocation()">
<div id="longitude"></div>
<div id="latitude"></div>
</body>
</html>
Related
I want to pass an variable to another file. I use the lat variable in new js file but not working.
In address.php:
<div class="saveaddress">Click me</div>
<script>
var lat;
var lng;
function displayLocation(position) {
var lat = position.coords.latitude;
var lng = position.coords.longitude;
}
</script>
.
.
.
<script src="js/save.js"></script>
save.js file:
$('.saveaddress').click(function(){
alert(lat);
}
How can I do that? (How can I do that? (I followed other questions but not worked for me.)
You should try fixing the scope of the variable by not redclaring:
var lat;
var lng;
function displayLocation(position) {
lat = position.coords.latitude;
lng = position.coords.longitude;
}
Alternatively, you could add the variable to the window:
function displayLocation(position) {
window.lat = position.coords.latitude;
window.lng = position.coords.longitude;
}
Then:
$('.saveaddress').click(function(){
alert(window.lat);
}
remove the two var inside the displayLocation function
Hey guys I have geolocation.html file and test.php file. I am using Ajax to pass var longitude and latitude from geolocation.html to my test.php for processing but it is showing me blank pages. I don't know why? Please help
geolocation.html
<html>
<head>
<script type= "text/javascript" src= "js/jquery.js" > </script>
<script>
//javascript is on the client
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition);
} else {
document.write("Geolocation is not supported by this browser.");
}
}
function showPosition(position) {
var latitude = position.coords.latitude;
var longitude = position.coords.longitude;
//Pass longitude and latitude to php how?
$.ajax({
type: 'POST',
url: 'test.php',
data: {lat: latitude,
lng:longitude}
});
}
</head>
Then my test.php
<?php
// $addlat = $_GET['addlat'];
// $addlong = $_GET['addlong'];
if (isset($_POST['lat']) && isset($_POST['lng']) ) {
$lat = $_POST['lat'];
$lng = $_POST['lng'];
echo $lat." ".$lng ;
}
?>
I modified your geolocation.html file. Hope this will help!
<html>
<head>
//ajax lib file
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
//javascript is on the client
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition);
} else {
document.write("Geolocation is not supported by this browser.");
}
}
function showPosition(position) {
var latitude = position.coords.latitude;
var longitude = position.coords.longitude;
//Pass longitude and latitude to php how?
$.post("test.php",
{
lat: latitude,
lng: longitude
},
function(data){
alert(data);
});
}
</script>
</head>
<button onclick="getLocation();">GET LOCATION</button>
First of all, please apologize my English.
Hi! I need to print with PHP the current user´s address, i have this small script:
<?
function getaddress($lat,$lng)
{
$url = 'http://maps.googleapis.com/maps/api/geocode/json?latlng='.trim($lat).','.trim($lng).'&sensor=false';
$json = #file_get_contents($url);
$data=json_decode($json);
$status = $data->status;
if($status=="OK")
{
return $data->results[0]->formatted_address;
}
else
{
return false;
}
}
?>
<?php
$lat= 21.884766199999998; //latitude
$lng= -102.2996459; //longitude
$address= getaddress($lat,$lng);
if($address)
{
echo $address;
}
else
{
echo "Not found";
}
?>
of course it works, but I don't know how to change the $lat and $long variables to the current users location.
In few words; how I can pass the current user lat and long location to the PHP variables to let this script works?
<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");
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>
</body>
</html>
this is an javascript based search. you can try it in html browser and pass the lat long to the php scripts.
if it helps you its ok or you can tell , i have other ways too.
You need to get this using JavaScript or other google api. Which you can place lat & lang in an separate hidden field and then assign to your php variables from that hidden fields.
Here is an example script to get this using html 5 and java-script
<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>
This is another script using google Geo-location API
<!DOCTYPE html>
<html>
<head>
<title>Geolocation</title>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
// Note: This example requires that you consent to location sharing when
// prompted by your browser. If you see the error "The Geolocation service
// failed.", it means you probably did not give permission for the browser to
// locate you.
var map, infoWindow;
function initMap() {
map = new google.maps.Map(document.getElementById('map'), {
center: {lat: -34.397, lng: 150.644},
zoom: 6
});
infoWindow = new google.maps.InfoWindow;
// Try HTML5 geolocation.
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
var pos = {
lat: position.coords.latitude,
lng: position.coords.longitude
};
infoWindow.setPosition(pos);
infoWindow.setContent('Location found.');
infoWindow.open(map);
map.setCenter(pos);
}, function() {
handleLocationError(true, infoWindow, map.getCenter());
});
} else {
// Browser doesn't support Geolocation
handleLocationError(false, infoWindow, map.getCenter());
}
}
function handleLocationError(browserHasGeolocation, infoWindow, pos) {
infoWindow.setPosition(pos);
infoWindow.setContent(browserHasGeolocation ?
'Error: The Geolocation service failed.' :
'Error: Your browser doesn\'t support geolocation.');
infoWindow.open(map);
}
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
</script>
</body>
</html>
This is the error that I am getting while running below javascript file
getCurrentPosition() and watchPosition() no longer work on insecure origins. To use this feature, you should consider switching your application to a secure origin, such as HTTPS. See https for more details.
This is my javascript file
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyA4HSRrQSje--aI6ImtJF30s5ezaUWxsow&libraries=places"></script>
<script>
function getLocation()
{
console.log("In geolocation");
if (navigator.geolocation)
{
navigator.geolocation.getCurrentPosition(showPosition);
}
else
{
print("Browser doesn't support geolocation");
}
function showPosition(position)
{
console.log("in show position");
dest_lat=position.coords.latitude;
dest_long=position.coords.longitude;
url = 'https://maps.googleapis.com/maps/api/geocode/json?latlng='+ dest_lat + ',' + dest_long + '&sensor=false';
$.get(url, function(data)
{
if (data.status == 'OK')
{
map.setCenter(data.results[0].geometry.location);
console.log("Dragaed lat "+marker.getPosition().lat());
console.log("Dragged lng "+marker.getPosition().lng());
console.log("Address "+data.results[0].formatted_address);
}
});
}
</script>
</head>
<body>
<input type="button" value="LocateMe" onclick="getLocation();"/>
</body>
</html>
You have to put it one a server with https://!
If you are using Visual Studio, you can configure to lunch the site with https:// see: https://dotnetcodr.com/2015/09/18/how-to-enable-ssl-for-a-net-project-in-visual-studio/
Alternativelyyou can test it on jsfiddler, which uses https per default.
Besides that your code has a lot of other errors.
Brackets don't match
map object is not defined in your example
varibles are not declared (they are added to the global namespace which can cause some really nasty problems later on and throws an error when you use "use strict")
Here is a working excample on jsfiddle: https://jsfiddle.net/3gkkvs50/
(stackoverflow doesn't use https for the examples)
HTML:
<input type="button" value="LocateMe" onclick="getLocation();" />
JS:
function getLocation() {
console.log("In geolocation");
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition);
} else {
print("Browser doesn't support geolocation");
}
}
function showPosition(position) {
console.log("in show position");
var dest_lat = position.coords.latitude;
var dest_long = position.coords.longitude;
var url = 'https://maps.googleapis.com/maps/api/geocode/json?latlng=' + dest_lat + ',' + dest_long + '&sensor=false';
$.get(url, function(data) {
alert(JSON.stringify(data));
});
}
This question already has an answer here:
Grabbing longitude and Latitude value from a function
(1 answer)
Closed 9 years ago.
How do i get the longitude and latitude of this JavaScript code as variables for global use. i have tried it several times but not working.
navigator.geolocation.getCurrentPosition(handle_geolocation_query,handle_errors);
function handle_errors(error)
{
switch(error.code)
{
case error.PERMISSION_DENIED: alert("user did not share geolocation data");
break;
case error.POSITION_UNAVAILABLE: alert("could not detect current position");
break;
case error.TIMEOUT: alert("retrieving position timed out");
break;
default: alert("unknown error");
break;
}
}
function handle_geolocation_query(position){
}
I am using it in a Jquery Mobile and PhoneGap app. Any help will be very much appreciated, thank you
Per the answer giving so far this what i have
$(document).ready(function(){
var latitude, longitude;
navigator.geolocation.getCurrentPosition(handle_geolocation_query,handle_errors);
function handle_errors(error)
{
switch(error.code)
{
case error.PERMISSION_DENIED: alert("user did not share geolocation data");
break;
case error.POSITION_UNAVAILABLE: alert("could not detect current position");
break;
case error.TIMEOUT: alert("retrieving position timed out");
break;
default: alert("unknown error");
break;
}
}
function handle_geolocation_query(position){
latitude = (position.coords.latitude);
longitude = (position.coords.longitude);
}
alert(latitude, longitude);
});
When i alert it it returns "undefined"
This is the html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Untitled Document</title>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<link href="http://code.google.com/apis/maps/documentation/javascript/examples/default.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="js/gas-script.js"></script>
</head>
<body>
</body>
</html>
Before navigator.geolocation.getCurrentPosition:
var latitude, longitude;
Inside handle_geolocoation_query(position):
latitude = position.coords.latitude;
longitude = position.coords.longitude;
Makes:
var latitude, longitude;
$(document).ready(function(){
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(handle_geolocation_query,handle_errors);
} else {
alert('Device probably not ready.');
}
});
function handle_errors(error) {
// error handling here
}
function handle_geolocation_query(position){
latitude = (position.coords.latitude);
longitude = (position.coords.longitude);
onPositionReady();
}
function onPositionReady() {
alert(latitude, longitude);
// proceed
}
In below mentioned code, lat, lng should be available globally in current file,
$(document).ready(function(){
var lat, lng;
navigator.geolocation.getCurrentPosition(handle_geolocation_query,handle_errors);
function handle_geolocation_query(position){
lat = position.coords.latitude;
lng = position.coords.longitude;
}
});