javascript bitmask permissions

gistfile1.txt

fnMayI=function(intPerms,strPerm){
    //intPerms is an dec number that conatins all of the permissions
    //set these to your permissions map these are the binary positions of intPerms
    var objPerms={
       "read":1
      ,"update":2
      ,"create":4
      ,"props":16
      ,"delete":64
      ,"perms":65536
    };
    //return truthy falsey
    return intPerms&objPerms[strPerm];
  };