Chrome Extension background 创建通知

lixin-macbook:chrome-ext lixin$ tree
.
└── chrome-hello2
    ├── background.js
    ├── imgs
    │   ├── icon128.png
    │   ├── icon16.png
    │   └── icon48.png
    └── manifest.json

{
    "manifest_version": 2,
    "name" : "Hello World-lixin",
    "version" : "2.0.0",
    "description" : "Welcome ...",
    "icons" : {
        "16"   : "imgs/icon16.png",
        "48"   : "imgs/icon48.png",
        "128"  : "imgs/icon128.png"
    },
    "background" : {
        "scripts" : ["background.js"]
    },
    "permissions" : [
        "contextMenus",
        "notifications",
        "proxy"
    ]
}

chrome.notifications.create({
    type : "basic",
    title : "最新通知",
    iconUrl : "imgs/icon48.png",
    message : "2019年最新放假通知..."
},function(){});