In a Chrome Extension, how can I accurately retrieve the user's region/locale/country from their Chrome browser?

Question

How does Google detect the user's country to set the user's search page accordingly? I have searched around and cannot find a simple way of doing it.

Answer 1

You can get the languages, which the user has set in the Chrome settings, like this:

chrome.i18n.getAcceptLanguages(function (list) {
    console.log(list);
});

For location, there is the location API (HTML5) - but the user must agree to share the location for it to work: http://html5demos.com/geo

Or you could use a geo IP service (IP is known only server side): http://freegeoip.net/json/

Answer 2

要获取浏览器窗口的区域设置和UI显示的语言，您可以使用：

chrome.i18n.getUILanguage()

Answer 3

Have you checked in the google developers api:

https://developer.chrome.com/extensions/api_index

I guess it uses geolocation :)