compass/coordinates.js

48 lines
1.0 KiB
JavaScript
Executable File

'use strict'
/* global navigator $ */
// Set units based on browser locale
const metric = !(window.navigator.language=='en-US'||window.navigator.language=='my')
// Check for GPS capability
if (!navigator.geolocation) $('#no-gps').show()
// Start tracking
else navigator.geolocation.watchPosition(
// Got location callbackw
function(pos) {
let lat = pos.coords.latitude.toFixed(4)
let lon = pos.coords.longitude.toFixed(4)
$('#lat').text(
(lat.substring(0,1)=='-')? // Negative values are South
lat.substring(1)+' S' : lat+' N'
)
$('#lon').text(
(lon.substring(0,1)=='-')? // Negative values are East
lon.substring(1)+' W' : lon+' E'
)
// Get altitude
if (pos.coords.altitude) {
$('#alt').show().text(
(metric)? // Convert to feet if needed
pos.coords.altitude.toFixed(1)+' m':
(pos.coords.altitude*3.28084).toFixed(1)+' ft'
)
}
else $('#alt').hide()
},
// Got error
function() {
$('.coord').hide()
$('#no-gps').show()
},
// Options
{ enableHighAccuracy:true }
)