saving variable value and retrieve it after page refresh [duplicate]

Answer 1

Cookies are your friend:

// Set a cookie or 2
document.cookie = 'somevar=somevalue';
document.cookie = 'another=123';

function getCookie(name)
{
    // Cookies seperated by ;   Key->value seperated by =
    for(var i = 0; pair = document.cookie.split("; ")[i].split("="); i++)
        if(pair[0] == name)
            return unescape(pair[1]);

    // A cookie with the requested name does not exist
    return null;
}

// To get the value
alert(getCookie('somevar'));