chrome扩展名通知未显示

Question

Trying to build a chrome extension with notifications, and I would like a button that displays a notification. This is the HTML code:

    <div><button onclick="notifyMe()">Notify me!</button></div>

This button shows in the extension, but when I press it, nothing happens. Here is my js code:

function notifyMe() {
    var notification = new Notification("Hi there!");
}

Am I missing any js code? I have no idea

Answer 1

Not sure if I'm following correctly but if you want to show a chrome notification there's actually the chrome notifications API

I'd do the following:

<div><button onclick="notifyMe()">Notify me!</button></div>

JS

function notifyMe() {
  chrome.notifications.create('some id for this notification', {
    type: 'basic', // "basic", "image", "list", or "progress"
    title: 'a title for this notification',
    message: 'the message you want to show'
  }, function () { // called when the notification is created });
}

If you want to use the Notification you have to ask for permissions first to use it (taken from the Web Notifications article on MDN ):

// At first, let's check if we have permission for notification
// If not, let's ask for it
if (window.Notification && Notification.permission !== "granted") {
  Notification.requestPermission(function (status) {
    if (Notification.permission !== status) {
      Notification.permission = status;
    }
  });
}

function notifyMe() {
  if (window.Notification && Notification.permission === "granted") {
    var n = new Notification("Hi!");
  }
}

Answer 2

Your code is calling the Desktop Notification API and not the Chrome Notification API:

var notification = new Notification("Hi there!");

Apparently Google modified the level of permission in chrome extension (works perfectly in Chrome 43 +). Just include this line in your manifest.json, and Desktop notifications API will work (as well as the Chrome Notification API):

"permissions": [ "notifications", ...etc... ],

Adding notifications to the permissions scopes, you can check Notification.permission returns "granted".