JS 与 后台如何获取 Cookies

js里面这样写：

function getCookie() {
var search = "RH.RHR" + "="
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) {
offset += search.length
end = document.cookie.indexOf(";", offset)
if (end == -1) end = document.cookie.length
alert(document.cookie.length);
return unescape(document.cookie.substring(offset, end))
}
else return ""
}
}

后台取：
string username=Request.Cookies["UserName"].ToString();

js里面这样写：

function getCookie() {
var search = "RH.RHR" + "="
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) {
offset += search.length
end = document.cookie.indexOf(";", offset)
if (end == -1) end = document.cookie.length
alert(document.cookie.length);
return unescape(document.cookie.substring(offset, end))
}
else return ""
}
}

后台取：
string username=Request.Cookies["UserName"].ToString();