js对cookie的几个操作函数，网上找的（仅作备忘）

function getCookieVal(offset) {
    var endstr = document.cookie.indexOf(";", offset);
    if (endstr == - 1) {
        endstr = document.cookie.length;
    }
    return unescape(document.cookie.substring(offset, endstr));
}
function getCookie(name) {
    var arg = name + "=";
    var alen = arg.length;
    var clen = document.cookie.length;
    var i = 0;
    var j = 0;
    while (i < clen) {
        j = i + alen;
        if ...