js操作cookie详解编程语言

<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>