Get value of variable outside the function

Question

I'm trying to get value of variable outside the function but I can't able to do so. Kindly give answers

<script>
    var lati;
    var lngi;   
    function getLocation() {
    if (navigator.geolocation) 
    {
      navigator.geolocation.getCurrentPosition(showPosition);
    } 
      initialize();
    }
    function showPosition(position) 
    {
      lati=position.coords.latitude;
      lngi=position.coords.longitude;  
    }
    alert(lati);
</script>

Answer 1

You do not get your value, because you are not calling getLocation() function. Because you are not calling it, it nevers change the value of lati and then it display it's default value which is undefined .

 // ------------------------ FUNCTIONS TO SIMULATE const navigator = { geolocation: { getCurrentPosition: (func) => { func({ coords: { latitude: '0.5125', longitude: '51.545', }, }); }, }, }; function initialize() { } // ------------------------ FUNCTIONS TO SIMULATE var lati; var lngi; function getLocation() { if (navigator.geolocation) { navigator.geolocation.getCurrentPosition(showPosition); } initialize(); } function showPosition(position) { lati = position.coords.latitude; lngi = position.coords.longitude; } getLocation(); alert(lati);

Answer 2

In the snipped provided in the question, showPosition() is never called and, therefore, cannot modify the variable lati . If you call showPosition() before alert(lati) , it should work.