Javascript Google Chrome中的HMTL5桌面通知问题

我在向wicket站点添加基本桌面通知时遇到问题。基于上的示例代码，我已在页面中重写renderHead（IHeaderResponse）方法，以便在页面中添加以下内容：

<script type="text/javascript" id="desktopNotification-init">
  /*<![CDATA[*/
  function notifyMe(){ 
    if (!("Notification" in window)) { 
      alert("This browser does not support desktop notification"); 
    }else if (Notification.permission === "granted") { 
      var notification = new Notification("You have a system notification"); 
    }else if (Notification.permission !== 'denied') { 
      Notification.requestPermission(function (permission) { 
        if(!('permission' in Notification)) { 
          Notification.permission = permission; 
        } 
        if (permission === "granted") { 
          var notification = new Notification("You have a system notification"); 
        } 
     }); 
    } 
  }

/*]]>*/
</script>

这在Firefox中有效，但在Chrome中单击按钮无效。这似乎是权限请求的一个问题，因为如果我更改设置以始终允许通知，它将正常工作。我缺少的javascript有问题吗

public void onClick( AjaxRequestTarget p_target, WebMarkupContainer p_menuItemComponent ) {
    if( p_target != null  ) {
      p_target.appendJavaScript( "notifyMe();" );
    }
}