<SCRIPT language=javascript>
function setCookies(name,value)
{
var Days = 30; //此 cookie 将被保存 30 天
var exp = new Date(); //new Date("December 31, 9998");
exp.setTime(exp.getTime() + Days*24*60*60*1000);
document.cookie = name + "="+ escape(value) +";expire*="+ **p.toGMTString();
}
function getCookies(name)
{
var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
if(arr != null) return unescape(arr[2]); return null;
}
function getcookies()
{
document.form1.UserName.value=getCookies("Loginusername");
\\把你要表单初始化放在这
}
function delCookies(name)
{
var exp = new Date();
exp.setTime(exp.getTime() – 1);
var cval=getCookie(name);
if(cval!=null) document.cookie=name +"="+cval+";expire*="+**p.toGMTString();
}
function submit()
{
username=document.form1.UserName.value；
setCookies(‘Loginusername’,username)
\\创建一个cookies,第一个为名字，后面的为值
}
</script>
<body onload="getcookies()">
</body>
/////////////////////////////////////////////////////////////////////
function getExpDate(days, hours, minutes) {
var expDate = new Date( );
if (typeof days == "number" && typeof hours == "number" &&
typeof hours == "number") {
expDate.setDate(expDate.getDate( ) + parseInt(days));
expDate.setHours(expDate.getHours( ) + parseInt(hours));
expDate.setMinutes(expDate.getMinutes( ) + parseInt(minutes));
return expDate.toGMTString( );
}
}
// utility function called by getCookie( )
function getCookieVal(offset) {
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1) {
endstr = document.cookie.length;
}
return unescape(document.cookie.substring(offset, endstr));
}
// primary function to retrieve cookie by name
function getCookie(name) {
var arg = name + "=";
var alen = arg.length;
var clen = 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 "";
}
// store cookie value with optional details as needed
function setCookie(name, value, expires, path, domain, secure) {
document.cookie = name + "=" + escape (value) +
((expires) ? "; expires=" + expires : "") +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
((secure) ? "; secure" : "");
}
// remove the cookie by setting ancient expiration date
function deleteCookie(name,path,domain) {
if (getCookie(name)) {
document.cookie = name + "=" +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
"; expires=Thu, 01-Jan-70 00:00:01 GMT";
}
}
将上面的几个js命名为cookie.js，下面演示其基本用法
<script type="text/javascript" src="cookie.js"></script>
<script type="text/javascript">
function foo()
{
var name = document.getElementById("name").value;
if(name)
{
setCookie("name",name);
}
document.getElementById("show").innerHTML+=("NEWEST NAME :"+ getCookie("name") + "<br>");
}
</script>
Chapter 1.9 example
<br>
<input type="text" id="name" size="20" />
<input type="button" value="setCookie" onclick="foo()" />
<div id="show"></div>
/////////////////////////////////////////////////////示例源码
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>js操作cookie 易网时代网络技术服务中心 http://www.escdns.com</title>
</head>
<body>
<input type="button" name="button" id="button" value="Remove Cookies" onclick="window.cookie.remove( )" />
<script language="javascript" type="text/javascript">
function Cookie() {
var self = this;
var trim = function(str){
return str.replace(/(^\s*)|(\s*$)/g, "");
}
var init = function(){
var allcookies = document.cookie;
if (allcookies == "") return;
var cookies = allcookies.split(‘;’);
for(var i=0; i < cookies.length; i++) // Break each pair into an array
cookies = cookies.split(‘=’);
for(var i = 0; i < cookies.length; i++) {
self[trim(cookies[0])] = decodeURIComponent(cookies[1]);
}
}
init();
this.save = function(daysToLive, path, domain, secure){
var dt = (new Date()).getTime() + daysToLive * 24 * 60 * 60 * 1000;
for(var prop in this) {
if (typeof this[prop] == ‘function’)
continue;
var cookie = "";
cookie = prop + ‘=’ + encodeURIComponent(this[prop]);
if (daysToLive || daysToLive == 0) cookie += ";expires=" + new Date(dt).toUTCString();
if (path) cookie += ";path=" + path;
if (domain) cookie += "; domain=" + domain;
if (secure) cookie += ";secure";
document.cookie = cookie;
}
}
this.remove = function(path, domain, secure){
self.save(0, path, domain, secure);
for(var prop in this) {
if (typeof this[prop] != ‘function’)
delete this[prop];
}
}
}
var cookie = new Cookie("vistordata");
if (!cookie.uId) {
cookie.uId = prompt("Please input you uId:","");
cookie.save(10);
}
document.write("Your userID is:" + cookie.uId);
var _idMap_img = document.createElement("IMG");
_idMap_img.style.display = "none";
document.body.appendChild(_idMap_img);
_idMap_img.src = " http://www.***.net/track/setIDmapping.cgi?uid=" + cookie.uId + "&cltId=xxxx";
</script>
</body>
</html>