js判断计算机语言

<script language="javascript">
$(function () {
        var language;
        if (navigator.appName == 'Netscape') {
            language = navigator.language;
        }
        else {
            language = navigator.browserLanguage;
        }
        language =language.substr(0,2)  

        if (language.indexOf('en') > -1) {
            location.href='/en/index.html';
        }
        else if (language.indexOf('zh') > -1) {
            //location.href='/index.html';
        }

    });


</script>