chrome extension notification with tabs - google-chrome-extension

Question

I try make deskotp notification used chrome extension.
I would it can work like this - when user visit recomended page it will be show.
background.js
function show() {
var notification = window.webkitNotifications.createNotification(
'48.png',
'YOUR VISIT PAGE http://stackoverflow.com/!'
);
notification.show();
}
// Conditionally initialize the options.
if (!localStorage.isInitialized) {
localStorage.isActivated = true; // The display activation.
localStorage.frequency = 1; // The display frequency, in minutes.
localStorage.isInitialized = true; // The option initialization.
}
function checkForValidUrl(tabId, changeInfo, tab) {
if (tab.url.indexOf('stackoverflow') > -1) {
if (window.webkitNotifications) {
if (JSON.parse(localStorage.isActivated)) {
show();
}
}
}
}
chrome.tabs.onUpdated.addListener(checkForValidUrl);
manifest.json
{
"name": "YouVisit",
"version": "0.1",
"description":
"Show desktop notification when user visit page",
"icons": {"48": "48.png"},
"permissions": [
"notifications",
"tabs"
],
"background": { "scripts": ["background.js"] },
"manifest_version": 2,
"web_accessible_resources": [
"48.png"
]
}
any ideas why this code doesn't work? can someone give me some literature to make it proper?

Answer 1

You failed to provide the proper arguments for the createNotification() function:
According to the docs:
// Create a simple text notification:
var notification = webkitNotifications.createNotification(
'48.png', // icon url - can be relative
'Hello!', // notification title
'Lorem ipsum...' // notification body text
);