我在这里寻求一些帮助，因为我看到的示例只是从选项卡到扩展程序，而不是相反。
我正在寻找使用自定义 Chrome 扩展程序调试的页面/选项卡的源代码。我希望扩展程序能够调用一条消息，并将响应发送回进行调用的扩展程序面板 javascript。
list
"permissions": [
"tabs",
"<all_urls>",
"debugger"
],
"background": {
"scripts": ["background.js"],
"persistent": false
},
"content_scripts": [
{
"matches": ["<all_urls>"],
"js": ["content.js"]
}
],
背景.js
chrome.browserAction.onClicked.addListener(function() {
chrome.tabs.query({active:true, windowId:chrome.windows.WINDOW_ID_CURRENT}, function(tabs) {
debuggee = {tabId:tabs[0].id};
chrome.debugger.attach(debuggee, version, onAttach.bind(null, tabs[0].id));
});
});
function onAttach(tabId) {
chrome.windows.create({url: "spy.html?" + tabId, type: "panel", width: 900, height: 700}, function(window) {
winId = window.id;
});
content.js
chrome.extension.onMessage.addListener(function(request, sender, sendResponse) {
if (request.data == "getHTML") {
sendResponse({data: document.getElementById('header').innerHTML});
}
});
spy.html
<script src="spy.js" type="text/javascript"></script>
spy.js
window.addEventListener("load", function() {
chrome.debugger.sendCommand({tabId:tabId}, "DOM.getDocument");
chrome.debugger.onEvent.addListener(onEvent);
});
function onEvent(debuggeeId, message, params) {
if (message=="DOM.documentUpdated") {
chrome.tabs.sendMessage(tabId, {data: "getHTML"}, function(response) {console.log(response.data);});
}
结果
端口错误:无法建立连接。接收端不存在。杂项绑定(bind):235 chromeHidden.Port.dispatchOnDisconnect 杂项绑定(bind):235
Error in event handler for 'undefined': Cannot read property 'data' of undefined TypeError: Cannot read property 'data' of undefined
at chrome-extension://fpdkndicjblnkakkiiapbbdflkehjmgm/headers.js:132:91
at miscellaneous_bindings:279:11
at chrome.Event.dispatchToListener (event_bindings:387:21)
at chrome.Event.dispatch_ (event_bindings:373:27)
at chrome.Event.dispatch (event_bindings:393:17)
at Object.chromeHidden.Port.dispatchOnDisconnect (miscellaneous_bindings:238:27)
当我尝试运行它时出现此错误。我错过了什么？
最佳答案
您如何捕获chrome.tabs.sendMessage(tabId,)的tabId，如果您正在寻找示例代码，您可以发布完整的脚本来调试问题吗如需将消息从 Chrome 扩展 传递到 调试选项卡，请选中此选项。
引用文献
manifest.json
注册弹出页面和内容脚本。
{
"name": "Pass message from Chrome Extension to Debugging Tab",
"version": "1",
"description": "http://stackoverflow.com/questions/14205155/how-can-i-pass-a-message-from-my-chrome-extension-to-debugging-tab",
"browser_action": {
"default_title": "Selected Text",
"default_popup": "popup.html"
},
"permissions": [
"tabs",
"<all_urls>"
],
"content_scripts": [
{
"matches": ["<all_urls>"],
"js": ["selection.js"]
}
],
"manifest_version": 2
}
popup.html
确保 HTML 遵守 CSP
<!DOCTYPE html>
<html>
<head>
<style>
body {
width: 300px;
}
textarea {
width: 250px;
height: 100px;
}
</style>
<script src="popup.js"></script>
</head>
<body>
<button id="submit">Pass Message</button>
</body>
</html>
popup.js
将消息传递给内容脚本。
function passMessage() {
//Select current tab to send message
chrome.tabs.query({"active":true,"currentWindow":true,"status":"complete","windowType":"normal"}, function(tabs) {
//It returns array so looping over tabs result
for(tab in tabs){
//Send Message to a tab
chrome.tabs.sendMessage(tabs[tab].id, {method: "Hi Content Script"});
}
});
}
// Bind On click event to passMessage() function
document.addEventListener("DOMContentLoaded",function (){
document.getElementById("submit").onclick = passMessage;
});
选择.js
添加了一个处理程序来捕获从弹出页面发送的消息
//Add a handler to handle message sent from popup.html
chrome.extension.onMessage.addListener(function(request, sender) {
console.log("Message "+request+" is recieved");
});
编辑:
在消除一些已弃用的 API()(例如 sendResponse)后，我使您的代码正常工作
背景.js
chrome.browserAction.onClicked.addListener(function () {
version = "1.0";
chrome.tabs.query({
active: true,
windowId: chrome.windows.WINDOW_ID_CURRENT
}, function (tabs) {
debuggee = {
tabId: tabs[0].id
};
chrome.debugger.attach(debuggee, version, onAttach.bind(null, tabs[0].id));
});
});
function onAttach(tabId) {
chrome.windows.create({
url: "spy.html?" + tabId,
type: "panel",
width: 900,
height: 700
}, function (window) {
winId = window.id;
});
}
content.js
chrome.extension.onMessage.addListener(function (request, sender) {
console.log("Message recieved");
if (request.data == "getHTML") {
chrome.extension.sendMessage({
"data": "Some Stuff"
});
}
});
spy.js
tabId = parseInt(window.location.search.substring(1));
window.addEventListener("load", function () {
chrome.debugger.sendCommand({
tabId: tabId
}, "DOM.getDocument");
chrome.debugger.onEvent.addListener(onEvent);
});
function onEvent(debuggeeId, message, params) {
if (message == "DOM.documentUpdated") {
chrome.tabs.sendMessage(tabId, {
"data": "getHTML"
});
}
}
chrome.extension.onMessage.addListener(function (response, sender) {
console.log(response);
});
如何确保在测试期间不会手动触发开发人员工具。
关于google-chrome-extension - 如何将 DOM 从调试选项卡获取到扩展脚本，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/14205155/