javascript 如果我有该选项卡的 tabId，如何获取特定选项卡的窗口对象？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/10822133/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How do I get the window object for a specific tab if I have that tab's tabId?
提问by trusktr
I have the tabId of a tab. How do I get it's window object?
我有一个选项卡的 tabId。我如何获得它的窗口对象？
回答by Silviu-Marian
The window object as seen inside chrome extensions:
在 chrome 扩展中看到的窗口对象：
chrome.tabs.get(YOUR_TAB_ID_HERE, function(tab){
chrome.windows.get(tab.windowId, function(win){
console.log(win); // THIS IS THE WINDOW OBJECT
});
});
But if you need the javascript runtime inside a specific tab, you'll need to use Content Scripts which are better explained here:
但是，如果您需要特定选项卡内的 javascript 运行时，您将需要使用内容脚本，这里有更好的解释：
http://code.google.com/chrome/extensions/content_scripts.html
http://code.google.com/chrome/extensions/content_scripts.html
回答by Alejandro Silvestri
To get the DOM window object from a tabId, you should insert a content script in that tab:
要从 tabId 获取 DOM 窗口对象，您应该在该选项卡中插入一个内容脚本：
chrome.tabs.executeScript(tabId, {code:'var w = window; console.log(w);'});
https://developer.chrome.com/extensions/tabs#method-executeScript
https://developer.chrome.com/extensions/tabs#method-executeScript
Perhaps you'll need to comunicate with your background page:
也许您需要与您的背景页面进行交流：
https://developer.chrome.com/extensions/content_scripts#host-page-communication
https://developer.chrome.com/extensions/content_scripts#host-page-communication
