Articles about javascript operating cookies (setting, deleting cookies)_javascript skills

The following article is an article from abroad.
http://www.jb51.net/article/20553.htm

Copy code The code is as follows:

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] );
}
}