转： js操作cookie

cookie的几个概念

http://dearhappyfish.blog.163.com/blog/static/1901094152012422114753777/

js操作cookie

转：http://www.oschina.net/code/snippet_156736_4923

 <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>