Is there a way to check if geolocation has been DECLINED with Javascript?

Question

I need JavaScript to display a manual entry if geolocation is declined.

What I have tried:

Modernizr.geolocation navigator.geolocation 

Neither describes if user has previously declined access to geolocation.

Answer 1

watchPosition and getCurrentPosition both accept a second callback which is invoked when there is an error. The error callback provides an argument for an error object. For permission denied, error.code would be error.PERMISSION_DENIED (numeric value 1).

Read more here: https://developer.mozilla.org/en/Using_geolocation

Example:

navigator.geolocation.watchPosition(function(position) {      console.log("i'm tracking you!");    },    function(error) {      if (error.code == error.PERMISSION_DENIED)        console.log("you denied me :-(");    });

EDIT: As @Ian Devlin pointed out, it doesn't seem Firefox (4.0.1 at the time of this post) supports this behavior. It works as expected in Chrome and probably Safari etc.

Answer 2

Without prompting the user, you can use the new permission api this is available as such:

navigator.permissions.query({ name: 'geolocation' })  .then(console.log)

(only works for Blink & Firefox)

http://caniuse.com/#feat=permissions-api