Javascript Cookie Read-write deletion function _javascript tips

Copy Code code as follows:

function GetCookie (name)
{
var start = document.cookie.indexOf (name + "=");
var len = start + name.length + 1;
if ((!start) && (name!= document.cookie.substring (0, name.length)) {
return null;
}
if (start = = 1) return null;
var end = Document.cookie.indexOf ('; ', Len);
if (end = = 1) end = Document.cookie.length;
Return unescape (document.cookie.substring (len, end));
}

// ---------------------------------------------------- //
function Setcookie (name, value, expires, path, domain, secure) {
var today = new Date ();
Today.settime (Today.gettime ());
if (expires) {
expires = expires * 1000 * 60 * 60 * 24;
}
var expires_date = new Date (Today.gettime () + (expires));
Document.cookie = name+ ' = ' +escape (value) +
((expires)? '; expires= ' +expires_date.togmtstring (): ') +//expires.togmtstring ()
((path)? ';p ath= ' + path: ') +
(domain)? ';d omain= ' + domain: ') +
(secure)? '; secure ': ';
}

// ---------------------------------------------------- //
function Deletecookie (name, path, domain)
{
if (GetCookie (name)) Document.cookie = name + ' = ' +
((path)? ';p ath= ' + path: ') +
(domain)? ';d omain= ' + domain: ') +
'; Expires=thu, 01-jan-1970 00:00:01 GMT ';
}