表达js res.redirect未定义？

Question

Hello I am having a problem with redirecting with express js. I have a function that triggers when a submit button is pressed. At the very end of the function, I want it to redirect to a different page. When trying to use res.redirect('/results.ejs'); , I get the error TypeError: Cannot read property 'redirect' of undefined . Do I have to make res global or pass it to the function somehow?

io.on('connection', function(socket){ socket.on('query', function(qCity,qState,qLowPrice,qHighPrice){ ..... I want it to redirect here });//end of socket.on query function });//end of io.on

Thanks.

Answer 1

To answer your question, you would need res to be in the same or higher scope of your socket.on('query') . So would want to "pass it to the function somehow."

Although that is not how this redirect should be handled. Because you are using a web socket you are going to want to redirect the user on the client when the socket on the server responds to the client. Here is a Stack Overflow question on how that is done.