:authority: golang.org
:method: GET
:path: /
:scheme: https
accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3
accept-encoding: gzip, deflate, br
accept-language: zh-CN,zh;q=0.9,en;q=0.8
cache-control: no-cache
cookie: __utmc=110886291; __utmz=110886291.1575179973.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); _ga=GA1.2.284134183.1575179973; _gid=GA1.2.1463361514.1575348908; __utma=110886291.284134183.1575179973.1575367986.1575386541.4; __utmt=1; __utmb=110886291.1.10.1575386541
dnt: 1
pragma: no-cache
sec-fetch-mode: navigate
sec-fetch-site: none
sec-fetch-user: ?1
upgrade-insecure-requests: 1
user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36Copy

"use strict";
function getCookie(name){
    var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");
    if(arr = document.cookie.match(reg))
        return unescape(arr[2]);
    else
        return null;
}

function setCookie(name, value, expiredays){
    var exp = new Date();
    exp.setDate(exp.getDate() + expiredays)
    document.cookie = name + "=" + escape(value) + ((expiredays==null) ? "" : ";expires=" + exp.toGMTString())
}

function delCookie(name){
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    document.cookie = name + "=;expires=" + exp.toGMTString();
}Copy

type Cookie struct {
        Name  string
        Value string

        Path       string    // optional
        Domain     string    // optional
        Expires    time.Time // optional
        RawExpires string    // for reading cookies only

        // MaxAge=0 means no 'Max-Age' attribute specified.
        // MaxAge<0 means delete cookie now, equivalently 'Max-Age: 0'
        // MaxAge>0 means Max-Age attribute present and given in seconds
        MaxAge   int
        Secure   bool
        HttpOnly bool
        SameSite SameSite // Go 1.11
        Raw      string
        Unparsed []string // Raw text of unparsed attribute-value pairs
}Copy

// 设置Cookie
cookie := http.Cookie{Name: "testcookiename", Value: "testcookievalue", Path: "/", MaxAge: 86400}
http.SetCookie(w, &cookie)

// 读取Cookie
cookie, err := req.Cookie("testcookiename")

// 删除Cookie
cookie := http.Cookie{Name: "testcookiename", Path: "/", MaxAge: -1}
http.SetCookie(w, &cookie)Copy

// SetCookie adds a Set-Cookie header to the provided ResponseWriter's headers.
// The provided cookie must have a valid Name. Invalid cookies may be
// silently dropped.
func SetCookie(w ResponseWriter, cookie *Cookie) {
    if v := cookie.String(); v != "" {
        w.Header().Add("Set-Cookie", v)
    }
}

// AddCookie adds a cookie to the request. Per RFC 6265 section 5.4,
// AddCookie does not attach more than one Cookie header field. That
// means all cookies, if any, are written into the same line,
// separated by semicolon.
func (r *Request) AddCookie(c *Cookie) {
    s := fmt.Sprintf("%s=%s", sanitizeCookieName(c.Name), sanitizeCookieValue(c.Value))
    if c := r.Header.Get("Cookie"); c != "" {
        r.Header.Set("Cookie", c+"; "+s)
    } else {
        r.Header.Set("Cookie", s)
    }
}Copy

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