Nodejs passing res.end() as callback not working

Question

Hello I am using connect and have: ``` var app = connect() .use(connect.static(directory)) .use(function(req,res) { switch (req.url) { case '/query': exportFunc.query("myquery", res.end); break; } } -- exportFunc.js -- exports.query= function(query, cb) { queryServer(query, cb); } var queryServer = function(query, cb) { cb("MyQueryResult"); } ``` But I get an error that cb cannot be determined what object it is. Do I need to cast this object into its correct type?

Accepted Answer

You're not calling the function with the right context (`this` in the function). You can fix it by replacing

```
 exportFunc.query("myquery", res.end);
```

with

```
 exportFunc.query("myquery", res.end.bind(res));
```

or

```
 exportFunc.query("myquery", function(){ res.end() });
```

Nodejs passing res.end() as callback not working

Solution

Problem