关于javascript:Javascript操作cookieaddCookiegetCookieclearAllCookie等操作

JavaScript对Cookies的操作，JS对Cookie做增删改查。
删除所有cookie

function clearAllCookie() {    document.cookie.split(";").forEach(function (c) {        document.cookie = c.replace(/^ +/, "").replace(/=.*/, "=;expires=" + new Date().toUTCString() + ";path=/");    });};

获取Cookie

function getCookie(cname) {    var name = cname + "=";    var decodedCookie = decodeURIComponent(document.cookie);    var ca = decodedCookie.split(";");    for (var i = 0; i < ca.length; i++) {        var c = ca[i];        while (c.charAt(0) == " ") {            c = c.substring(1)        }        if (c.indexOf(name) == 0) {            return c.substring(name.length, c.length)        }    }    return ""};

增加Cookie

function createCookie(name, value, days, path) {    path = path || "/";    var expires = "";    if (days) {        var date = new Date();        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));        expires = "; expires=" + date.toUTCString()    }    document.cookie = name + "=" + value + expires + "; path=" + path};

删除Cookie

function deleteCookie(name) {    var expires = new Date();    expires.setTime(expires.getTime()-1);    document.cookie = name + "=;expires=" + expires.toUTCString()};