javascript chrome.tabs.getCurrent() 或 tabs.query()
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chrome.tabs.getCurrent() or tabs.query()
提问by Jacob Edward
Both methods are producing the same error Uncaught TypeError: Cannot read property 'query' of undefinedfor my content script... I've already looked at How to fetch URL of current Tab in my chrome extension using javascriptand How do you use chrome.tabs.getCurrent to get the page object in a Chrome extension?though I'm still not sure what I'm doing incorrectly.
这两种方法都Uncaught TypeError: Cannot read property 'query' of undefined为我的内容脚本产生了相同的错误......我已经看过如何使用 javascript 在我的 chrome 扩展中获取当前标签的 URL以及如何使用 chrome.tabs.getCurrent 来获取页面对象Chrome 扩展程序？虽然我仍然不确定我做错了什么。
manifest.json
清单文件.json
{
"name": "Extension Tester",
"version": "0.0.1",
"manifest_version": 2,
"description": "Tester",
"permissions": [
"tabs"
],
"content_scripts": [
{
"matches": ["https://www.google.com/"],
"js": [
"inject.js"
]
}
]
}
inject.js
注入.js
chrome.tabs.query({ currentWindow: true, active: true }, function (tabs) {
console.log(tabs[0].id);
});
or
或者
chrome.tabs.getCurrent(function (tab) {
console.log(tab.id);
});
回答by youmu_i19
Cannot use chrome.tabsin content script,you need to use chrome.runtimeTo know the tab id of the content script, first use chrome.runtime.sendMessageto send a message, and the background page receive it.
不能chrome.tabs在内容脚本中使用，需要使用chrome.runtime要知道内容脚本的tab id，首先使用chrome.runtime.sendMessage发送消息，后台页面接收。
Using chrome.runtime.onMessage.addListener, the callback function is
使用chrome.runtime.onMessage.addListener，回调函数是
function(any message, MessageSender sender, function sendResponse) {...};
function(any message, MessageSender sender, function sendResponse) {...};
so, you will know the tab id by sender.id
因此，您将通过以下方式知道标签 ID sender.id
