window.webkitNotifications

requestPermission 請求桌面通知
checkPermission 檢查桌面通知許可（PERMISSION_ALLOWED = 0, PERMISSION_NOT_ALLOWED = 1, PERMISSION_DENIED = 2）
createNotification 創(chuàng)建桌面通知

if(window.webkitNotifications){
if(window.webkitNotifications.checkPermission()==0){
setInterval(function(){
var popup = window.webkitNotifications.createNotification("avator.jpg","如花溫馨提醒：","長時間面對電腦眼睛會瞎的，休息一下~！");
popup.show();
},1000 * 60 * 20);</p> <p> }else{
window.webkitNotifications.requestPermission();
}
}else{
alert('瀏覽器不支持桌面通知～！');
}