Javascript 从弹出脚本到内容脚本的WebExtension消息
我不熟悉Firefox扩展。单击按钮时,我试图从弹出脚本向内容脚本发送消息,但收到以下错误:Javascript 从弹出脚本到内容脚本的WebExtension消息,javascript,firefox,firefox-addon-webextensions,content-script,Javascript,Firefox,Firefox Addon Webextensions,Content Script,我不熟悉Firefox扩展。单击按钮时,我试图从弹出脚本向内容脚本发送消息,但收到以下错误: Could not establish connection. Receiving end does not exist. 我没有收到任何其他错误,因此我不确定为什么会发生此错误 弹出脚本: document.getElementById("rec").addEventListener("click", (e) => { var query = browser.tabs.query({c
Could not establish connection. Receiving end does not exist.
我没有收到任何其他错误,因此我不确定为什么会发生此错误
弹出脚本:
document.getElementById("rec").addEventListener("click", (e) => {
var query = browser.tabs.query({currentWindow: true, active : true});
var tab = query.then(getTab,onError);
function getTab(tabs) {
for (let tab of tabs){
send(tab.id);
}
}
function onError(error) {
console.log(`Error: ${error}`);
}
function send(tab){
browser.tabs.executeScript(tab, {
file: "/content_scripts/recorder.js",})
.then(function () { browser.tabs.sendMessage(tab, {record: "start"}) })
.catch(console.error.bind(console));
}
});
内容脚本:
(function() {
if (window.hasRun) {
return;
}
window.hasRun = true;
browser.runTime.onMessage.addListener(notify);
function notify(message){
alert(message.record);
}
})();
manifest.json:
{
"manifest_version": 2,
"name": "TW Recorder",
"version": "1.0",
"description": "Recorder.",
"icons": {
"48": "icons/border-48.png"
},
"permissions": [
"<all_urls>",
"activeTab",
"tabs",
"storage",
"webRequest"
],
"browser_action": {
"default_icon": "icons/border-48.png",
"default_title": "Recorder",
"default_popup": "popup/main.html"
},
"content_scripts": [
{
"matches": ["<all_urls>"],
"js": ["content_scripts/jquery-3.3.1.min.js","content_scripts/recorder.js"]
}
]
}
{
“清单版本”:2,
“名称”:“TW记录器”,
“版本”:“1.0”,
“说明”:“记录器”,
“图标”:{
“48”:“icons/border-48.png”
},
“权限”:[
"",
“活动标签”,
“标签”,
“存储”,
“webRequest”
],
“浏览器操作”:{
“默认图标”:“icons/border-48.png”,
“默认标题”:“录音机”,
“默认弹出窗口”:“popup/main.html”
},
“内容脚本”:[
{
“匹配项”:[“”],
“js”:[“content\u scripts/jquery-3.3.1.min.js”,“content\u scripts/recorder.js”]
}
]
}
更正的内容脚本(将运行时更改为运行时):
(function() {
if (window.hasRun) {
return;
}
window.hasRun = true;
browser.runtime.onMessage.addListener(notify);
function notify(message){
alert(message.record);
}
})();