//设置cookie函数，三个参数，一个是cookie的名子，一个是值，一个是设置cookie保存时间，单位：天function setCookie(name, value, days) {    var days = arguments[2] ? arguments[2] : 30; //此 cookie 将被保存 30 天    var exp = new Date(); //new Date("December 31, 9998");    exp.setTime(exp.getTime() + days * 86400000);    document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString();}

//设置浏览器关闭就失效的临时cookiefunction setTempCookie(name, value) {    document.cookie = name + "=" + escape(value) + ";";}

//取cookies函数function getCookie(name) {    var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));    if (arr != null) {        return unescape(arr[2]);    }    return null;}

//取cookies函数function getCookie(name) {    var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));    if (arr != null) {        return unescape(arr[2]);    }    return null;}