Chrome扩展-获取DOM内容
Chrome扩展-获取DOM内容
提问于 2013-11-04 04:57:06
我正在尝试从弹出窗口访问activeTab DOM内容。这是我的清单：
{
"manifest_version": 2,
"name": "Test",
"description": "Test script",
"version": "0.1",
"permissions": [
"activeTab",
"https://api.domain.com/"
],
"background": {
"scripts": ["background.js"],
"persistent": false
},
"content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
"browser_action": {
"default_icon": "icon.png",
"default_title": "Chrome Extension test",
"default_popup": "index.html"
}
}我真的很困惑后台脚本(具有持久性的事件页面: false)还是content_scripts是可行的方法。我已经阅读了所有的文档和其他SO帖子，但对我来说仍然没有任何意义。
谁能解释一下为什么我可能会用一个而不是另一个。
这是我一直在尝试的background.js：
chrome.extension.onMessage.addListener(
function(request, sender, sendResponse) {
// LOG THE CONTENTS HERE
console.log(request.content);
}
);我只是从弹出控制台执行以下操作：
chrome.tabs.getSelected(null, function(tab) {
chrome.tabs.sendMessage(tab.id, { }, function(response) {
console.log(response);
});
});我得到了：
Port: Could not establish connection. Receiving end does not exist. 更新：
{
"manifest_version": 2,
"name": "test",
"description": "test",
"version": "0.1",
"permissions": [
"tabs",
"activeTab",
"https://api.domain.com/"
],
"content_scripts": [
{
"matches": ["<all_urls>"],
"js": ["content.js"]
}
],
"content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
"browser_action": {
"default_icon": "icon.png",
"default_title": "Test",
"default_popup": "index.html"
}
}content.js
chrome.extension.onMessage.addListener(
function(request, sender, sendResponse) {
if (request.text && (request.text == "getDOM")) {
sendResponse({ dom: document.body.innerHTML });
}
}
);popup.html
chrome.tabs.getSelected(null, function(tab) {
chrome.tabs.sendMessage(tab.id, { action: "getDOM" }, function(response) {
console.log(response);
});
});当我运行它时，我仍然得到相同的错误：
undefined
Port: Could not establish connection. Receiving end does not exist. lastError:30
undefined页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/19758028
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