ComFunJS.js有时候不好用，需要用原生的存读cookie

    // 设置Cookie
function setCookie(name, value, days) {
    var expires = \"\";
    if (days) {
        var Date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        expires = \"; expires=\" + date.toUTCString();
    }
    // 必须指定path=/，确保全站可访问
    document.cookie = name + \"=\" + encodeURIComponent(value) + expires + \"; path=/\";
}

// 读取Cookie
function getCookie(name) {
    var nameEQ = name + \"=\";
    var ca = document.cookie.split(\';\');
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) === \' \') c = c.substring(1);
        if (c.indexOf(nameEQ) === 0) {
            return decodeURIComponent(c.substring(nameEQ.length));
        }
    }
    return null;
}
 

 var token = getCookie(\'token2\')

 setCookie(\"token2\", tokenstr, 7);