無明居

??1 // ?utility?function?to?retrieve?an?expiration?date?in?proper
??2
??3 // ?format;?pass?three?integer?parameters?for?the?number?of?days,?hours,
??4
??5 // ?and?minutes?from?now?you?want?the?cookie?to?expire?(or?negative
??6
??7 // ?values?for?a?past?date);?all?three?parameters?are?required,
??8
??9 // ?so?use?zeros?where?appropriate
?10
?11 function ?getExpDate(days,?hours,?minutes)? {
?12
?13 ???? var ?expDate? = ? new ?Date(?);
?14
?15 ???? if ?( typeof ?days? == ? " number " ? && ? typeof ?hours? == ? " number " ? && ?
?16
?17 ???????? typeof ?hours? == ? " number " )? {
?18
?19 ????????expDate.setDate(expDate.getDate(?)? + ?parseInt(days));
?20
?21 ????????expDate.setHours(expDate.getHours(?)? + ?parseInt(hours));
?22
?23 ????????expDate.setMinutes(expDate.getMinutes(?)? + ?parseInt(minutes));
?24
?25 ???????? return ?expDate.toGMTString(?);
?26
?27 ????}
?28
?29 }
?30
?31 ???
?32
?33 // ?utility?function?called?by?getCookie(?)
?34
?35 function ?getCookieVal(offset)? {
?36
?37 ???? var ?endstr? = ?document.cookie.indexOf?( " ; " ,?offset);
?38
?39 ???? if ?(endstr? == ? - 1 )? {
?40
?41 ????????endstr? = ?document.cookie.length;
?42
?43 ????}
?44
?45 ???? return ?unescape(document.cookie.substring(offset,?endstr));
?46
?47 }
?48
?49 ???
?50
?51 // ?primary?function?to?retrieve?cookie?by?name
?52
?53 function ?getCookie(name)? {
?54
?55 ???? var ?arg? = ?name? + ? " = " ;
?56
?57 ???? var ?alen? = ?arg.length;
?58
?59 ???? var ?clen? = ?document.cookie.length;
?60
?61 ???? var ?i? = ? 0 ;
?62
?63 ???? while ?(i? < ?clen)? {
?64
?65 ???????? var ?j? = ?i? + ?alen;
?66
?67 ???????? if ?(document.cookie.substring(i,?j)? == ?arg)? {
?68
?69 ???????????? return ?getCookieVal(j);
?70
?71 ????????}
?72
?73 ????????i? = ?document.cookie.indexOf( " ? " ,?i)? + ? 1 ;
?74
?75 ???????? if ?(i? == ? 0 )? break ;?
?76
?77 ????}
?78
?79 ???? return ? "" ;
?80
?81 }
?82
?83 ???
?84
?85 // ?store?cookie?value?with?optional?details?as?needed
?86
?87 function ?setCookie(name,?value,?expires,?path,?domain,?secure)? {
?88
?89 ????document.cookie? = ?name? + ? " = " ? + ?escape?(value)? +
?90
?91 ????????((expires)? ? ? " ;?expires= " ? + ?expires?:? "" )? +
?92
?93 ????????((path)? ? ? " ;?path= " ? + ?path?:? "" )? +
?94
?95 ????????((domain)? ? ? " ;?domain= " ? + ?domain?:? "" )? +
?96
?97 ????????((secure)? ? ? " ;?secure " ?:? "" );
?98
?99 }
100
101 ???
102
103 // ?remove?the?cookie?by?setting?ancient?expiration?date
104
105 function ?deleteCookie(name,path,domain)? {
106
107 ???? if ?(getCookie(name))? {
108
109 ????????document.cookie? = ?name? + ? " = " ? +
110
111 ????????????((path)? ? ? " ;?path= " ? + ?path?:? "" )? +
112
113 ????????????((domain)? ? ? " ;?domain= " ? + ?domain?:? "" )? +
114
115 ???????????? " ;?expires=Thu,?01-Jan-70?00:00:01?GMT " ;
116
117 ????}
118
119 }
120
121