document.cookie="userId=828";

document.cookie="userId=828; userName=hulk";

document.cookie="str="+escape("I love ajax");

document.cookie="userId=828";
document.cookie="userName=hulk";

document.addCookie("userId=828");
document.addCookie("userName=hulk");

document.cookie="userId=929";

var strCookie=document.cookie;

<script language="JavaScript" type="text/javascript">
<!--
document.cookie="userId=828";
document.cookie="userName=hulk";
var strCookie=document.cookie;
alert(strCookie);
//-->
</script>

<script language="JavaScript" type="text/javascript">
<!--
//设置两个cookie
document.cookie="userId=828";
document.cookie="userName=hulk";
//获取cookie字符串
var strCookie=document.cookie;
//将多cookie切割为多个名/值对
var arrCookie=strCookie.split("; ");
var userId;
//遍历cookie数组，处理每个cookie对
for(var i=0;i<arrCookie.length;i++){
       var arr=arrCookie[i].split("=");
       //找到名称为userId的cookie，并返回它的值
       if("userId"==arr[0]){
          userId=arr[1];
          break;
       }
}
alert(userId);
//-->
</script>

document.cookie="userId=828;
expires=GMT_String";

<script language="JavaScript" type="text/javascript">
<!-- //获取当前时间
var date=new Date();
var expireDays=10; //将date设置为10天以后的时间
date.setTime(date.getTime()+expireDays*24*3600*1000); //将userId和userName两个cookie设置为10天后过期
document.cookie="userId=828; userName=hulk;
expire="+date.toGMTString(); //-->
</script>

<script language="JavaScript" type="text/javascript">
<!--
//获取当前时间
var date=new Date();
//将date设置为过去的时间
date.setTime(date.getTime()-10000);
//将userId这个cookie删除
document.cookie="userId=828; expire="+date.toGMTString();
//-->
</script>

document.cookie="name=value; path=cookieDir";

document.cookie="userId=320; path=/shop";

document.cookie="userId=320; path=/";

document.cookie="name=value;
domain=cookieDomain";

document.cookie="name=value;
domain=.google.com";

<script language="JavaScript" type="text/javascript">
<!--
function addCookie(name,value,expireHours){
       var cookieString=name+"="+escape(value);
       //判断是否设置过期时间
       if(expireHours>0){
          var date=new Date();
          date.setTime(date.getTime+expireHours*3600*1000);
          cookieString=cookieString+"; expire="+date.toGMTString();
       }
       document.cookie=cookieString;
}
//-->
</script>

<script language="JavaScript" type="text/javascript">
<!--
function getCookie(name){
       var strCookie=document.cookie;
       var arrCookie=strCookie.split("; ");
       for(var i=0;i<arrCookie.length;i++){
          var arr=arrCookie[i].split("=");
          if(arr[0]==name)return arr[1];
       }
       return "";
}
//-->
</script>

<script language="JavaScript" type="text/javascript">
<!--
function deleteCookie(name){
       var date=new Date();
       date.setTime(date.getTime()-10000);
       document.cookie=name+"=v; expire="+date.toGMTString();
}
//-->
</script>