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Cookie的使用之保存与获取代码示例

    代码为设置Cookie和获取Cookie方法的例子

    复制代码 代码如下:

    function SetUserCookie() {
    //取用户名
    var usr = document.getElementById(‘user’).value;
    var expdate = new Date();
    //当前时间加上两周的时间
    expdate.setTime(expdate.getTime() + 14 * (24 * 60 * 60 * 1000));
    //将最后一个用户信息写入到Cookie
    SetCookie(“49BA-C005-7D-OADOC-5B-USER”,usr,expdate);
    }
    function GetUserCookie() {
    var id = “49BA-C005-7D-OADOC-5B-USER”;//GUID标识符
    var usr = GetCookie(id);
    if (usr != null) {
    document.getElementById(‘userid’).value = usr;
    }
    }
    //写入到Cookie

    function SetCookie(name, value, expires) {
    var argv = SetCookie.arguments;
    //本例中length = 3
    var argc = SetCookie.arguments.length;
    var expires = (argc > 2) ? argv[2] : null;
    var path = (argc > 3) ? argv[3] : null;
    var domain = (argc > 4) ? argv[4] : null;
    var secure = (argc > 5) ? argv[5] : false;
    document.cookie = name + “=” + escape(value) + ((expires == null) ? “” : (“; expires=” + expires.toGMTString())) + ((path == null) ? “” : (“; path=” + path)) + ((domain == null) ? “” : (“; domain=” + domain)) + ((secure == true) ? “; secure” : “”);
    }
    //取Cookie的值

    function GetCookie(name) {
    var arg = name + “=”;
    var alen = arg.length;
    var clen = document.cookie.length;
    var i = 0;
    while (i < clen) {
    var j = i + alen;
    //alert(j);
    if (document.cookie.substring(i, j) == arg) return getCookieVal(j);
    i = document.cookie.indexOf(” “, i) + 1;
    if (i == 0) break;
    }
    return null;
    }
    function getCookieVal(offset) {
    var endstr = document.cookie.indexOf(“;”, offset);
    if (endstr == -1) endstr = document.cookie.length;
    return unescape(document.cookie.substring(offset, endstr));
    }

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