Develop Reference

How to get user location on browser using PHP [duplicate]

My application is powered by jQuery mobile and uses geolocation.
After my application attempts to get the user's location, the (Chrome) browser prompts the user:
Example.com wants to track your physical location [allow] [deny]
My goal is:
If the user clicks "Allow", function 1 is called (location is used
by app).
If the user clicks "Deny", function 2 is called (address form
appears).
How can I bind a function to the event that occurs (if any) when the user clicks the "Allow" or "Deny" button?

The getCurrentPosition function accepts two function arguments. Heck, the first is executed when you allow and the other when you deny!
Documentation
http://jsfiddle.net/pimvdb/QbRHg/
navigator.geolocation.getCurrentPosition(function(position) {
alert('allow');
}, function() {
alert('deny');
});

Link to Docs
function handlePermission() { navigator.permissions.query({name:'geolocation'}).then(function(result) {
if (result.state == 'granted') {
report(result.state);
geoBtn.style.display = 'none';
} else if (result.state == 'prompt') {
report(result.state);
geoBtn.style.display = 'none';
navigator.geolocation.getCurrentPosition(revealPosition,positionDenied,geoSettings);
} else if (result.state == 'denied') {
report(result.state);
geoBtn.style.display = 'inline';
}
result.onchange = function() {
report(result.state);}});}function report(state) {
console.log('Permission ' + state);}
I hope this works.

How do I clear geolocation permissions

I want to enable geolocation permissions only once per visit., e.g. if a user leaves my site and then returns, they will be prompted for geolocation permission again.
the Permissions.revoke method isn't widely supported, and MDN states that it's deprecated.

You can't change permissions of geolocation, but u check what was clicked by the user and allow or deny it:
navigator.permissions.query({name:'geolocation'}).then(function(result) {
if (result.state === 'granted') {
} else if (result.state === 'prompt') {
} else if(result.state === 'denied'){
}
report(result.state);
});

function revokePermission({
navigator.permissions.revoke({
name:'geolocation'
}).then(function(result) {
report(result.state);
});
}
Here is what u looking for...

how to fix navigator.permissions.query

I have a navigator.permissions.query that is not working
function handlePermission() {
navigator.permissions.query({name:'geolocation'}).then(function(result) {
if (result.state == 'granted') {
report(result.state);
geoBtn.style.display = 'none';
} else if (result.state == 'prompt') {
report(result.state);
geoBtn.style.display = 'none';
navigator.geolocation.getCurrentPosition(revealPosition,positionDenied,geoSettings);
} else if (result.state == 'denied') {
report(result.state);
geoBtn.style.display = 'inline';
}
result.onchange = function() {
report(result.state);
}
});
}
function report(state) {
document.getElementById("t").innerHTML = ('Permission ' + state);
}
handlePermission();
I have a live example here please check out my code and tell me where I am going wrong

You should read the example again and the docs for the functions you're using. The error messages in you live example are pretty clear.
navigator.geolocation.getCurrentPosition(revealPosition,positionDenied,geoSettings);
You have to hand the correct/valid parameters to this function. revealPosition is a function which is run, when the user granted the geolocation, positionDenied is a function which is run, when the user denies the access to the geolocation and geoSettings is an object which includes the setting for the call to .getCurrentPosition.
So once you create the missing parameters instead of handing undefined references to the call the function will run just fine.

Javascript disable chrome notifications

I need a page with a button that when pressed disables or blocks all push notifications enabled on chrome.
I tried this :
let dnperm = document.getElementById('dnperm');
dnperm.addEventListener('click', function(e){
e.preventDefault();
if(!window.Notification){
alert("Notification not supported!");
}else{
Notification.requestPermission().then(function(permission) {
console.log(permission);
if(permission === 'granted'){
permission = 'denied';
alert("you succesd");
}else if(permission === 'denied'){ alert("you fail");
permission = 'granted';
}
})
}
});
HTML :
<body>
block

You can`t change Notification.permission via browser API, it can be done only via native browser propt

Remove HTML5 notification permissions

You can prompt a user to allow or deny desktop notifications from the browser by running:
Notification.requestPermission(callback);
But is it possible to remove that permission by code? We want our users to have the option to toggle notifications. Can this be achieved by JavaScript or do we need to save that option elsewhere?

Looking at the documentation on Notification at MDN and WHATWG, there does not seem to be a way to request revocation of permission. However, you could emulate your own version of the permission using localStorage to support that missing functionality. Say you have a checkbox that toggles notifications.
<input type="checkbox" onChange="toggleNotificationPermission(this);" />
You can store your remembered permissions under the notification-permission key in local storage, and update the permission state similar to:
function toggleNotificationPermission(input) {
if (Notification.permission === 'granted') {
localStorage.setItem('notification-permission', input.checked ? 'granted' : 'denied');
} else if (Notification.permission === 'denied') {
localStorage.setItem('notification-permission', 'denied');
input.checked = false;
} else if (Notification.permission === 'default') {
Notification.requestPermission(function(choice) {
if (choice === 'granted') {
localStorage.setItem('notification-permission', input.checked ? 'granted' : 'denied');
} else {
localStorage.setItem('notification-permission', 'denied');
input.checked = false;
}
});
}
}
You could retrieve the permission as:
function getNotificationPermission() {
if (Notification.permission === 'granted') {
return localStorage.getItem('notification-permission');
} else {
return Notification.permission;
}
}
When you want to display a notification, check your permission:
if (getNotificationPermission() === 'granted') {
new Notification(/*...*/);
}

No, there is no way for your script to programmatically relinquish permission to show notifications. The API specification does not have any permission-related functions aside from requestPermission. (Of course, a browser may have an options menu that allows the user to revoke permission for a domain, but that's a browser-level option, not a site-level option. For example, in Chrome, you can see this options menu by clicking the icon in the left of the address bar.)
If you don't want to show notifications, simply don't call new Notification.
You can either wrap all your calls to new Notification inside conditions:
if(notifications_allowed) {
new Notification(...);
}
Or you can rewrite the Notification constructor to contain a contiditional and call the original Notification as appropriate:
(function() {
var oldNofitication = Notification;
Notification = function() {
if(notifications_allowed) {
oldNotification.apply(this, arguments);
}
}
})();
If you use vendor-prefixed constructors or functions (e.g., webkitNotifications.createNotification), then you'll need to rewrite each of those as well to be conditional on your options variable.