js操作cookie

<script language=javascript>

//獲得coolie 的值
function cookie(name){
var cookieArray=document.cookie.split("; "); //得到分割的cookie名值對
var cookie=new Object();
for (var i=0;i<cookieArray.length;i++){

  var arr=cookieArray[i].split("=");       //將名和值分開    

  if(arr[0]==name)return unescape(arr[1]); //如果是指定的cookie，則返回它的值    


}
return "";
}
function delCookie(name)//刪除cookie
{
document.cookie = name+"=;expires="+(new Date(0)).toGMTString();
}
function getCookie(objName){//獲取指定名稱的cookie的值

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

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

    var temp = arrStr[i].split("=");

    if(temp[0] == objName) return unescape(temp[1]);


}
}
function addCookie(objName,objValue,objHours){      //添加cookie

var str = objName + "=" + escape(objValue);

if(objHours > 0){                               //為時不設定過期時間，瀏覽器關閉時cookie自動消失

    var date = new Date();

    var ms = objHours*3600*1000;

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

    str += "; expires=" + date.toGMTString();


}
document.cookie = str;
}
function SetCookie(name,value)//兩個參數，一個是cookie的名子，一個是值
{

var Days = 30; //此 cookie 將被保存 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) + ";expires=" + exp.toGMTString();


}
function getCookie(name)//取cookies函數
{

var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));

 if(arr != null) return unescape(arr[2]); return null;




}
function delCookie(name)//刪除cookie
{

var exp = new Date();

exp.setTime(exp.getTime() - 1);

var cval=getCookie(name);

if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();


}
</script></pre>