浏览器扩展通信问题为什么只有特定页面可行，其它页面报错（Could not establish connection. Receiving end does not exist）？-灵析社区

"background": { "service_worker": "background.js" }, 然后，在background.js： chrome.runtime.onMessage.addListener((message, sender, sendResponse) => { if (message.from === 'popup') { chrome.tabs.query({url: '音乐播放网页URL'}, (tabs) => { if (tabs.length) { chrome.tabs.sendMessage(tabs[0].id, message, sendResponse); } }); } else if (message.from === 'content') { chrome.runtime.sendMessage(message); } return true; });