Detecting the language of a frame or a string using Chrome extension?

Question

I am writing a Google Chrome Extension. Now I need to detect the language of a frame in a tab. I read the post Detecting the current tab language using Chrome extension? but the answers involve examining the whole tab, apparently. Here I am in a chat and I have to examine a response in a table in a frame to see if the respondent has changed languages so that I can respond appropriately.

So what I have is either a frame or a string from the table.

Any suggestions? I am writing in javascript and I am not familiar with jquery.

Answer 1

不是直接在Chrome扩展程序API中，而是可以创建一个content_script来将element.addEventListener("DOMNodeInserted", function() { something })侦听器附加到要检查的区域，然后向翻译api发出请求检测语言。