How to detect that JavaScript and/or Cookies are disabled?

Question

How to detect that JavaScript or Cookies are disabled in the user\'s browser and notify him any help ?

Answer 1

This function can view error message for users and also can stop script executing and it can return cookies status.

function IS_Cookies_Enabled(Show_Message, Stop_Script)
{
    if(Show_Message == undefined){
        Show_Message = true;
    }

    if(Stop_Script == undefined){
        Stop_Script = false;
    }


    var Cookie_Status = navigator.cookieEnabled;
    if (!Cookie_Status)
    { 
        document.cookie = "Test";
        Cookie_Status = document.cookie.indexOf("Test") != -1;
        // Delete test cookies
        document.cookie = "Test=1; expires=Thu, 01-Jan-1970 00:00:01 GMT";

    }

    if((!Cookie_Status) && (Show_Message))
    {
        document.getElementsByTagName('body')[0].innerHTML = "
Cookies Required
Cookies are not enabled on your browser. 
Please enable cookies in your browser preferences to continue.
Sylingo";
    }

    if((!Cookie_Status) && (Stop_Script))
    {
        throw new Error('Cookies is disabled');
    }
    return Cookie_Status;
}

To use it:

IS_Cookies_Enabled(true, true);  // Will stop script and view error message

IS_Cookies_Enabled(true, false);  // Just view error message

$Cookies_Status = IS_Cookies_Enabled(false, false);  // return cookies status

And for checking JavaScript use: