有沒有方法getBackgroundPage

Question

我想了解有關鉻擴展，我想我缺少的東西。我想用背景腳本上傳文件...這裏是我的清單：

"manifest_version": 2, 
"name": "myTest", 
"description": "Upload file", 
"version": "0.1", 
"icons": { 
    "64": "64.png", 
    "16": "16.png", 
    "32": "32.png", 
    "128": "128.png" 
}, 
"background":{ 
    "scripts": ["justupload.js"], 
    "persistent": true 
}, 
"content_scripts": [ 
    { 
     "matches": ["http://my.url/page.html"], 
     "js": ["link.js"] 
    } 
    ], 
"permissions": [ 
    "http://my.url/page.html","background" 
] 

而且link.js

function sendbg(){ 
var BGPage = chrome.extension.getBackgroundPage(); 
BGPage.senddata(document.getElementById('files')); 
} 
document.getElementById('files').addEventListener('change', sendbg, false); 

當文件的變化，我收到以下錯誤：

Uncaught TypeError: Object #<Object> has no method 'getBackgroundPage' 

謝謝

Answer 1

通過內容腳本進行通信需要通過消息解析來完成。 檢查this和this