Geolocation data saved in a variable/localstorage - html

Question

i have a problem with the Geolocation API -.-'
I'm using the FirefoxOS Boilerplate App (https://github.com/robnyman/Firefox-OS-Boilerplate-App) for create a simple html5 app.
The problem is simple: I would like the data (lat/lon) obtained from the API are returned by a function as an array.
All the examples that i have found uses the data on the fly for show the maps or insert in a div (as also this boilerplate).
navigator.geolocation.getCurrentPosition(function (position) {
geolocationDisplay.innerHTML = "<strong>Latitude:</strong> " + position.coords.latitude + ", <strong>Longitude:</strong> " + position.coords.longitude;
geolocationDisplay.style.display = "block";
},
function (position) {
geolocationDisplay.innerHTML = "Failed to get your current location";
geolocationDisplay.style.display = "block";
});
This is the code of the boilerplate for the Geolocation...
I would want a function like get_location that return me the data, but after days of testing/google search I gave up and I ask you who are more experienced with callback/scope in Javascript of me.
The opntions that i have evaluated it's save the data in a hidden div or save with localstorage/cookies.
Thanks for the help!
EDIT 20/11:
function load_location() {
navigator.geolocation.getCurrentPosition(save_location, handleLocationError, {maximumAge: 0, timeout: 1000, enableHighAccuracy: true});
}
function handleLocationError(error) {
alert(error.code + ' - ' + error.message);
}
function save_location(position) {
localStorage.clear();
ls_save('latitude',position.coords.latitude);
ls_save('longitude',position.coords.longitude);
ls_save('accuracy',position.coords.accuracy);
ls_save('altitude',position.coords.altitude);
ls_save('altitudeAccuracy',position.coords.altitudeAccuracy);
ls_save('heading',position.coords.heading);
ls_save('speed',position.coords.speed);
}
function ls_save(key,value) {
localStorage.setItem(key, value);
}
function get_location() {
while(typeof localStorage['latitude'] === 'string') {
return localStorage.getItem("latitude");
}
}
load_location();
//Code
console.log(get_location());
The new code after the comments. I do not know how performance this solution...
I have replaced console.log with alert and i get undefined then in some cases is not asynchronous.
Edit: 22/11:
Fixed the while

Answer 1

You can return the geolocation data as an array, by doing something like this:
function doSomethingWithGeo(geo) {
console.log(geo);
}
function get_location() {
navigator.geolocation.getCurrentPosition(function (position) {
doSomethingWithGeo([[position.coords.latitude, position.coords.longitude]]);
});
}
When you call get_location, it will retrieve the geolocation coordinates, and will call the function doSomethingWithGeo with the array you wanted. If you want to store your data, you can do it in the doSomethingWithGeo function.
Let me know if it's not what you were looking for.