javascript操作cookie的文章(设置，删除cookies)

下面这篇是国外的一篇文章。
https://3water.com/article/20553.htm

var sel = new Object(); 
var sel_num = 0; 
function getCookieVal(offset) { 
var endstr = document.cookie.indexOf(";", offset); 
if (endstr == -1) endstr = document.cookie.length; 
return unescape(document.cookie.substring(offset, endstr)); 
} 
function GetCookie(name) { 
var arg = name + "="; 
var alen = arg.length; 
var clen = document.cookie.length; 
//alert(document.cookie.length); 
var i = 0; 
while (i < clen) { 
var j = i + alen; 
if (document.cookie.substring(i, j) == arg) 
return getCookieVal(j); 
i = document.cookie.indexOf(" ", i) + 1; 
if (i == 0) break; 
} 
return null; 
} 
function SetCookie(name, value, expires, path, domain, secure) { 
document.cookie = name + "=" + escape(value) + ((expires) ? "; expires=" + expires.toGMTString() : "") + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + ((secure) ? "; secure" : ""); 
return value; 
} 
function DeleteCookie(name) { 
if (GetCookie(name) != null) { 
SetCookie(name, "", null, "/", null); 
} 
} 
function cookie_content() { 
i = 0; 
var content = ""; 
for (key in sel) { 
if (i == 0) { 
content += key + "[" + sel[key] + "]"; 
} 
else { 
content += "," + key + "[" + sel[key] + "]"; 
} i++; 
} 
return content; 
} 
function inni_data() { 
var cookie_sel = new Object(); 
cookie_str = GetCookie("Member_COOKIE"); 
if (cookie_str != "" && cookie_str != null) { 
cookie_sel = cookie_str.split(','); 
for (var k = 0; k < cookie_sel.length; k++) { 
i = cookie_sel[k].indexOf("["); 
j = cookie_sel[k].indexOf("]"); 
sel[cookie_sel[k].substring(0, i)] = cookie_sel[k].substring(i + 1, j); 
sel_num++; 
} 
draw(); 
} 
} 
function addMember(id, nm) { 
if (!sel[id]) { 
sel_num++; sel[id] = nm; 
} 
else 
{sel[id] = nm;} 
SetCookie("Member_COOKIE", cookie_content(), null, "/", null); 
} 
function draw() { 
out = ''; 
for (key in sel) { 
$("#"+key).val(sel[key] ); 
} 
}