javascript 关于cookie的操作

<script language=javascript>  

//获得coolie 的值  

 

function cookie(name){ 

   var cookieArray=document.cookie.split("; "); //得到分割的cookie名值对    

 

   var cookie=new Object();    

 

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

 

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

 

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

 

   }  

   return "";  

}   

 

function delCookie(name)//删除cookie

 { 

   document.cookie = name+"=;expires="+(new Date(0)).toGMTString(); 

}  

 

function getCookie(objName){//获取指定名称的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){                               //为时不设定过期时间，浏览器关闭时cookie自动消失

 

        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)//两个参数，一个是cookie的名子，一个是值

 { 

    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) + ";expires=" + exp.toGMTString();

 

}

 

function getCookie(name)//取cookies函数      

{ 

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

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

}

 

function delCookie(name)//删除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>