JavaScript for detecting browser language preference [duplicate]

Answer 1

If you don't want to rely on an external server and you have one of your own you can use a simple PHP script to achieve the same behavior as @DanSingerman answer.

languageDetector.php:

And just change this lines from the jQuery script:

url: "languageDetector.php",
dataType: 'json',
success: function(language) {
    nowDoSomethingWithIt(language);
}