Dual Language Browsers Redirect Javascript

I am trying to redirect English browsers to xyz.com/?lang=en while letting Swedish ones stay on xyz.com I have been trying : var type=navigator.appName if (type=='Netscape') var la

Solution 1:

if (lang !== "sv") {
    window.location.replace(window.location.href + '?lang=en');
}

Solution 2:

You are always checking the language from the navigator.

This way everytime the page loads it will try to reload the page with the altered or not url.

You need to place a condition where it will not reload the page.. That should be when there is a URL parameter passed.

So check for the querystring as well and override the default if a value exists in the url.

<scripttype="text/javascript">
    (function(undefined){
        var queryString = {},
            search = window.location.search.substring(1), // read the current querystring
            searchItems = search.length?search.split('&'):[]; //  and split it at the different params if any existfor(var i = 0, len = searchItems.length; i < len; i++){ // for each parameter passedvar parts = searchItems[i].split('='); // split the key/value pair
           queryString[parts[0].toLowerCase()] = parts[1]; // and store it to our queryString variable
        }

       if (queryString.lang === undefined){ // if there is no lang parameter passed do your checking otherwise skip this step completely and use the url lang parameter.var type=navigator.appName, lang = ''; 
           if (type=="Netscape") {
               lang = navigator.language.substr(0,2);
           } else {
               lang = navigator.userLanguage.substr(0,2);
           }
           if (lang != "sv"){
               if (searchItems.length){
                   window.location.replace(window.location.href + '&lang=en');
               } else {
                   window.location.replace(window.location.href + '?lang=en');
               }
           }
       }
    }());
</script>

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Notice: Although, as @missingno mentions in his comment to your question, this is best handled server-side than client-side.