update my table and insert new column in mysql using nodejs

I need the syantax for inserting new column in existing table
client.query('ALTER TABLE login ADD'+'code VARCHAR(255)',
function(err,result){
if(err){ console.log("ERROR:"+err.message);
}
else{
console.log("new column added"); }
});

it showing me error just need proper sytanx thanx in advance

change the query 

      ALTER table login add column (code varchar(255));