javascript读写cookie的一个小demo

王朝html/css/js·作者佚名  2006-01-10
窄屏简体版  字體: |||超大  

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head>

<title>test Cookie</title>

<link rel="Stylesheet" type="text/css" href="../css/mainStyleSheet.css" />

</head>

<body>

<h1 align="center">Cookie读写测试</h1>

<hr />

<h2>write cookie:</h2>

<form id="login" name="login">

<table width="100%">

<tr>

<td align="right">User name:</td>

<td><input type="text" id="username" /></td>

</tr>

<tr>

<td align="right">Password:</td>

<td><input type="password" id="password" /></td>

</tr>

<tr><td colspan="2" align="center">

<input type="submit" id="ok" value="writer" onclick="javascript:writecookie(login)" />

</td></tr>

</table>

</form>

<script language="javascript" type="text/javascript">

<!--

function writecookie(fm)

{

var cookiename = fm.username.value;

var cookievalue = fm.password.value;

var codecookievalue = "";

for(var i = 0;i < cookievalue.length; ++i)

{

codecookievalue += cookievalue.charCodeAt(i);

if(i < cookievalue.length-1)

codecookievalue += "+";

}

var cookie = cookiename + "=" + codecookievalue;

var date = new Date();

date.setTime(date.getTime() + 100000);

var expirestr = date.toGMTString();

cookie += "; expires=" + expirestr;

document.cookie = cookie;

}

-->

</script>

<hr />

<h2>read cookie:</h2>

<input id="read" type="button" value="Read Cookie" onclick="javascipt:readcookie()" />

<script language="javascript" type="text/javascript">

<!--

function readcookie()

{

var cookiepair = document.cookie.split("=");

if(cookiepair[0] != null

&& cookiepair[1] != null)

{

var truevalue = "";

var arraycode = cookiepair[1].split("+");

for(var i = 0; i < arraycode.length; ++i)

truevalue += String.fromCharCode(arraycode[i]);

if(cookiepair != null)

{

document.writeln("<table width=\"100%\">");

document.writeln("<tr>");

document.writeln("<td>");

document.writeln("user name:");

document.writeln("<\/td>");

document.writeln("<td>");

document.writeln(cookiepair[0]);

document.writeln("<\/td>");

document.writeln("<\/tr>");

document.writeln("<tr>");

document.writeln("<td>");

document.writeln("password:");

document.writeln("<\/td>");

document.writeln("<td>");

document.writeln(truevalue);

document.writeln("<\/td>");

document.writeln("<\/tr>");

document.writeln("<\/table>");

}

}

else

document.writeln("no cookie!");

}

-->

</script>

</body>

</html>

 
 
 
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