javascript - Notification HTML5 在 Chrome 中是否在本地工作？

Question

我正在尝试在 Chrome 中创建通知。我已经编写了这个简单的代码，但在 CHrome 中显示了通知，而 checkPermission() 返回良好 0。

我做的事情与这个网站(示例)相同，它在我的 Chrome 浏览器中运行良好。

if (window.webkitNotifications.checkPermission() == 0) {
  window.webkitNotifications.createNotification("icon.png", "title", "text").show();
} else {
  window.webkitNotifications.requestPermission();
}

问题出在哪里？

[编辑:问题已修复]

事实上，我允许在 Chrome 设置中显示来自所有网站的通知，现在，它工作正常!

Answer 1

请求权限仅适用于用户手势(请参阅下面的问题，并引用文档)。

简而言之，您需要注册一个点击事件或类似的然后请求权限。

document.querySelector('#show_button').addEventListener('click', function() {
  if (window.webkitNotifications.checkPermission() == 0) { // 0 is PERMISSION_ALLOWED

    var notification = window.webkitNotifications.createNotification(
        'icon.png', 'Notification Title', 'Notification content...');
      notification.show();
  } else {
    window.webkitNotifications.requestPermission();
  }
}, false);

这是一个 jsfiddle

Webkit notifications requestPermission function doesn't work
requestPermission Requests that the user agent ask the user for permission to show notifications from scripts. This method should only be called while handling a user gesture; in other circumstances it will have no effect. This method is asynchronous. The function provided in callback will be invoked when the user has responded to the permission request. If the current permission level is PERMISSION_DENIED, the user agent may take no action in response to requestPermission.