ToString changes Javascript Object to Undefined - Stack Overflow

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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.

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.

• javascript
• object
• undefined
• tostring

Share Improve this question Follow edited Aug 25, 2012 at 5:14 Himanshu 32.6k3232 gold badges115115 silver badges136136 bronze badges asked Aug 24, 2012 at 5:22 IndieIndie 2311 silver badge66 bronze badges 1

• Does this answer your question? Why does `Object.prototype.toString` always return `[object *]`? – Vasyl Moskalov Commented May 18, 2022 at 10:23

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2 Answers 2

Sorted by: Reset to default 7

try:

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

try this..

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

you will get the userID.

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