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username=John Doe
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document.cookie [ = name1=value1; ??=GMT_String; path=; domain=;]
?? ? ??
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user_id=2 ;user_name=admin;
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document.cookie = "user_name=admin";
?? ?? ?? ?? , ?? ? ??
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//?? ?? ????
var date=new ?? ();
date.setTime(date.getTime ()+24*3600*1000); document.cookie = "user_id=2;path=/;domain=.5idev.com;expire="+date.toGMTString( );
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document.cookie = "test="+escape("JavaScript cookie test");
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document.cookie? ?? ?? ???? ?? ?? ?? ??? ? ??? ??? ??????. ?? ???? ?? ???? ?? ??(?? ??)? ????.
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>php中文網(wǎng)(php.cn)</title> </head> <body> <p>與本文檔相關(guān)的 cookies（如果存在的話）：</p> <script type="text/javascript"> document.write(document.cookie) </script> </body> </html>
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??? ???? ?? ?? ???? ???? ???? ??? ??, setCookie ??? ???? ???? ??? 365? ?? ?????.
function checkCookie()
{
var username=getCookie("username");
if (username!="")
{
alert("Welcome again " + username);
}
else
{
username = prompt("Please enter your name:","");
if (username!="" && username!=null)
{
setCookie("username",username,365);
}
}
}JavaScript? ???? ?? ?? cookie
JavaScript? ??? .cookie ??? ???? ??? ???? ?? ??? ? ????.
JavaScript?? ??? ?? ??? ????.
document.cookie="username=John Doe";
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document.cookie="username=John Doe; ??=Thu, 18 Dec 2013 12:00:00 GMT";
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document.cookie="username=John Doe; ??=2013? 12? 18? ??? 12:00:00 GMT; path=";
JavaScript? ???? ?? ??
JavaScript?? ??? ??? ? ????. ??? ???? ?? ??? ??????.
var x = document.cookie;
?: document.cookie? ??? ???? ?? ??? ?????. ??: cookie1=value; cookie2=value cookie3; =?;
JavaScript? ???? ?? ??
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document.cookie="username=John Smith; ??=Thu, 18 Dec 2013 12:00:00 GMT; path=";
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document.cookie = "username=; ??=Thu, 01 Jan 1970 00 :00:00 GMT";
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?? ??
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php.cn</title>
</head>
<head>
<script>
function setCookie(cname,cvalue,exdays){
var d = new Date();
d.setTime(d.getTime()+(exdays*24*60*60*1000));
var expires = "expires="+d.toGMTString();
document.cookie = cname+"="+cvalue+"; "+expires;
}
function getCookie(cname){
var name = cname + "=";
var ca = document.cookie.split(';');
for(var i=0; i<ca.length; i++) {
var c = ca[i].trim();
if (c.indexOf(name)==0) return c.substring(name.length,c.length);
}
return "";
}
function checkCookie(){
var user=getCookie("username");
if (user!=""){
alert("Welcome again " + user);
}
else {
user = prompt("Please enter your name:","");
if (user!="" && user!=null){
setCookie("username",user,30);
}
}
}
</script>
</head>
<body onload="checkCookie()"></body>
</html>
