passkey
//写cookie
function setCookie(name,value){
  var Days = 30;
  var exp = new Date();
  exp.setTime(exp.getTime() + Days*24*60*60*1000);
  document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
//读取cookie
function getCookie(name){
  var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
  if(arr=document.cookie.match(reg)){
    return unescape(arr[2]);
  }   
else{     return null;
  } }
//删除cookie function delCookie(name){   var exp = new Date();   exp.setTime(exp.getTime() - 1);   var cval=getCookie(name);   if(cval!=null){     document.cookie= name + "="+cval+";expires="+exp.toGMTString();
  } }

 

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