ToString将Javascript对象更改为Undefined

Question

mysqlconnection.query("SELECT userID FROM users_session WHERE userSessionID = '" + SESSION_ID_ESCAPED + "'", function SelectCb (err, rows) {
if (err) {
    throw err;
}
else {
    console.log(rows[0]);
}

How do I turn row[0] into a string so that the browser can view it?

The console tells me rows[0] = {userID: 2} // This is [object Object] in any sort of transfer.

I used , var TheID = rows[0].toString // TheID is now undefined when console.log'd or sent out.

Answer 1

尝试：

var TheID = rows[0]['userID'].toString();

Answer 2

try this..

console.log(rows[0].userID);

you will get the userID.