想分別打印出 bill, steve, bann 的各項var friends={    bill:{firstName:'Bill',lastName:'Manson',number:'123',address:['Hanson225, Sanhen St.','LA','903987']},    steve:{firstName:'Steve',lastName:'Nanon',number:'456',address:['JackMarry59, Nahop St.','CA','809756']},    bann:{firstName:'Bann',lastName:'Mason',number:'789',address:['Homon25, Hogon St.','OH','309878']}    };var list=function(friends){    for(var i=0;i<friends.length;i++){        for(var j=0;j<friends[i].length;j++){        console.log(friends[i][j];);        };        };    };//報錯:SyntaxError: missing ) after argument list