js拿cookie

var cookieArray=document.cookie.split("; ");
   var cookie=new Object();  
   for (var i=0;i<cookieArray.length;i++){  
      var arr=cookieArray[i].split("=");      
      if(arr[0]=='SSO_TOKEN'){
      url +='&'+cookieArray[i];
      break;
      }
   }