Question

我编写了一个chrome扩展程序，可以成功记录滚动数据的所有用户（带有像素数量的时间戳）。此数据当前正在控制台中登录。

然而我的下一步却给我带来了一些麻烦。

然后我希望将创建的每个数据日志都发送到外部网页。即，页面将自动更新并存档每个新的带时间戳的条目/像素计数器扩展记录。

通过在DOM事件中传递一条简单的消息，我已经能够在扩展和网页之间进行通信。但是我无法获得扩展以发送它正在收集的滚动数据。

我觉得我很亲近，而且我已经阅读了Google的Messaging API，但我觉得有点迷失。

到目前为止，这是我的代码：

的manifest.json

{
"manifest_version": 2,
"name": "Caressing the Silver Rectangle",
"description": "Measures Jesse Bowling's distance scrolled in pixels on Google Chrome",
"version": "1.1",

"content_scripts": [
    {
        "matches": [
            "<all_urls>"
        ],
        "js": [
            "scroller.js"
        ],
        "run_at": "document_start"
    }
],

"background": {
    "scripts": ["background.js"]
},

"externally_connectable": {
    "matches": ["http://*/*jessebowling.space/caressingthesilverrectangle/*"]
},

"browser_action": {
    "default_icon":"icon.png",
    "default_title": "Caressing the Silver Rectangle",
    "default_popup": "popup.html"
},
"permissions": [
    "activeTab",
    "<all_urls>",
    "background",
    "tabs",
    "storage"
]
}

Background.js

chrome.runtime.onMessage.addListener(
function(request, sender, sendResponse) {
    console.log("background.js got a message")
    console.log(request);
    console.log(sender);
    sendResponse("bar");
}
);

Scroller.js

/*jslint devel: true */

// The ID of the extension we want to talk to.
var caressingthesilverrectangleId = 
"http://*/*jessebowling.space/caressingthesilverrectangle/*"
var totalScroll;
var lastKnownScrollPos = 0;

window.addEventListener("scroll", function () {
"use strict";
console.log(lastKnownScrollPos);
totalScroll += Math.abs(window.scrollY - lastKnownScrollPos);
lastKnownScrollPos = window.scrollY;
chrome.storage.sync({ scroll: totalScroll });
function (response) {
    console.log(response);
}
});


// send data through a DOM event
document.dispatchEvent(new CustomEvent('csEvent', {detail: 
totalScroll}));


// Make a simple request:
chrome.runtime.sendMessage(caressingthesilverrectangleId, 
{getTargetData: true},
function(response) {
if (targetInRange(response.targetData))
  chrome.runtime.sendMessage(caressingthesilverrectangleId, 
{activateLasers: true});
 });

// Start a long-running conversation:
var port = chrome.runtime.connect(caressingthesilverrectangleId);
port.postMessage(chrome.storage.sync({ scroll: totalScroll }));

Answer 1

我猜你所在的部分

var port = chrome.runtime.connect(caressingthesilverrectangleId);
port.postMessage(chrome.storage.sync({
    scroll: totalScroll
}));

是您尝试发送邮件的地方。但是，您发送的消息是chrome.storage.sync的结果，它始终为undefined。您可能希望拆分这两个调用，以便实际发送一些数据，如：

var port = chrome.runtime.connect(caressingthesilverrectangleId);        
chrome.storage.sync({
    scroll: totalScroll
});
port.postMessage({
    scroll: totalScroll
});

将邮件从Chrome扩展程序发送到外部网页

1 个答案: