Question

这是我的asp代码，可以用Javascript完成吗？

HttpCookie cookie = this.Request.Cookies["Votes"];
if (cookie != null)
    if (cookie.Values.Get(id.ToString()) == "true")  return true;
return false;

Answer 1

function readTheCookie(the_info)
{
// load the cookie into a variable and unescape it

 var the_cookie = document.cookie;
 var the_cookie = unescape(the_cookie);

// separate the values from the cookie name

 var broken_cookie = the_cookie.split("some parameter"); // parameter depends on how the cookie is stored
 var the_values = broken_cookie["some index"]; // index of the value that you want
}

这些是阅读Cookie的所有部分，您可以使用此代码段来实现您想要的效果。

Answer 2

document.cookie允许您访问JavaScript中的cookie。你需要做一些解析才能做你想做的事。

Answer 3

使用此代码

function setCookie(c_name, value, exdays) {
            var exdate = new Date();
            exdate.setDate(exdate.getDate() + exdays);
            var c_value = escape(value) + ((exdays == null) ? "" : "; expires=" + exdate.toUTCString());
            document.cookie = c_name + "=" + c_value;
        }


function getCookie(c_name) {
    var i, x, y, ARRcookies = document.cookie.split(";");
    for (i = 0; i < ARRcookies.length; i++) {
        x = ARRcookies[i].substr(0, ARRcookies[i].indexOf("="));
        y = ARRcookies[i].substr(ARRcookies[i].indexOf("=") + 1);
        x = x.replace(/^\s+|\s+$/g, "");
        if (x == c_name) {
            return unescape(y);
        }
    }
}

function GetSetCookie() {
            var version = getCookie("version");
            if (version != null && version != "") {
                if (version == 'full') {
                    version = 'text';
                }
                else {
                    version = 'full';
                }
            }
            else {
                version = 'full';
            }
            setCookie("version", version, 365);
            window.top.location.reload();
        }

Answer 4

我在W3schools找到了适合我的代码

  function setCookie(cname, cvalue, exdays) {
        var d = new Date();
        d.setTime(d.getTime() + (exdays*24*60*60*1000));
        var expires = "expires="+d.toUTCString();
        document.cookie = cname + "=" + cvalue + "; " + expires;
    }

function getCookie(cname) {
    var name = cname + "=";
    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(name) == 0) return c.substring(name.length, c.length);
    }
    return "";
}

function checkCookie() {
    var user = getCookie("username");
    if (user != "") {
        alert("Welcome again " + user);
    } else {
        user = prompt("Please enter your name:", "");
        if (user != "" && user != null) {
            setCookie("username", user, 365);
        }
    }
}

在javascript中读取cookie

4 个答案: