I am using getCurrentPosition to get local latitude and longitude. I know this function is asynchronous, just wondering how to return latitude and longitude value that can be accessed by other functions?
function getGeo() {
navigator.geolocation.getCurrentPosition(getCurrentLoc)
}
function getCurrentLoc(data) {
var lat,lon;
lat=data.coords.latitude;
lon=data.coords.longitude;
getLocalWeather(lat,lon)
initMap(lat,lon)
}
Geolocation getCurrentPosition() Method The getCurrentPosition() method returns the current position of the device.
What does showPosition() returns? Explanation: showPosition() method returns both latitude and longitude of user.
It has the highest accuracy; in most Android smartphones, the accuracy can be up to 10 metres. Mobile phone tracking is used if a cellphone or wireless modem is used without a GPS chip built in.
The geolocation property returns a Geolocation object that can be used to locate the user's position. The geolocation property is read-only. The geolocation property is only available in secure contexts (HTTPS).
I would suggest you wrapping it in a promise:
function getPosition() {
// Simple wrapper
return new Promise((res, rej) => {
navigator.geolocation.getCurrentPosition(res, rej);
});
}
async function main() {
var position = await getPosition(); // wait for getPosition to complete
console.log(position);
}
main();
https://jsfiddle.net/DerekL/zr8L57sL/
ES6 version:
function getPosition() {
// Simple wrapper
return new Promise((res, rej) => {
navigator.geolocation.getCurrentPosition(res, rej);
});
}
function main() {
getPosition().then(console.log); // wait for getPosition to complete
}
main();
https://jsfiddle.net/DerekL/90129LoL/
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With