get current Position with html and use it with javascript

Question

I'd like to get my current position with HTML5 and use it with javascript. I did some test, it works, but with my final version I have an undefined value.

function geolocError(dueToBrowser=true){
    if(dueToBrowser){
        alert('your browser does not support HTML5 geolocation');
    }else{
        alert('error with geolocation');
    }   
}



function getPositon(){
    return navigator.geolocation.getCurrentPosition(function(position){
        return position.coords;
    }, geolocError);
}

$(document).ready(function() {



    if(navigator.geolocation) {
        var pos = getPositon();

        console.log(pos)
}
});

My console.log(pos); returns me "undefined".

A. Wolff · Accepted Answer · 2014-01-12 12:46:57Z

1

Geolocation is async, you cannot do that. You should set logic in getCurrentPosition callback or use a deferred object:

See e.g jsFiddle

var defer = $.Deferred();

function getPositon() {
    navigator.geolocation.getCurrentPosition(function (position) {
        defer.resolveWith(position.coords);
    }, geolocError);
    return defer;
}

$(document).ready(function () {
    if (navigator.geolocation) {
        getPositon().done(function () {
            console.log(this);
        });
    }
});

answered Jan 12, 2014 at 12:46

A. Wolff

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2 Comments

billyJoe Over a year ago

thanks it works but it's a bad new. I had as idea to have the position on each page when it's loaded. For example i would like to post a comment with my position but i don't want the user wait to post it request :( it is a solution to store to position in a cookie ?

billyJoe Over a year ago

I've used sessionStorage instead of cookie

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