app.post and the express-fileupload dependency is producing no response - node.js

Question

I have a simple html uploading form
<h1>Upload File Here</h1>
<form methods="post" enctype="multipart/form-data" action="/">
<input type="file" name="filename" /> <input type="submit" value="upload" />
</form>
I want uploaded files to hit a "/upload" folder. I am using the following express code to do this.
const express = require("express");
const app = express();
upload = require("express-fileupload");
app.listen(80);
app.use(upload());
console.log("Server Started");
app.get("/", (req, res) => {
res.sendFile(__dirname + "/index.html");
});
app.post("/", (req, res) => {
if (req.files) {
var file = req.files.filename,
filename = file.name;
file.mv("/upload/" + filename, err => {
if (err) {
console.log(err);
res.send("error occured");
} else {
res.send("done!");
}
});
}
});
When I start the server and go to localhost in Chrome, I see the upload form. If I try to upload something, the url box changes to reflect the file I tried to upload, but the file does not appear in the '/upload' folder. Any ideas on what obvious mistake I'm making??
Thanks!
The solution is in my form. I need to set the action="http://localhost:80/upload"
New HTML is
<h1>Upload File Here</h1>
<form
ref="uploadForm"
id="uploadForm"
action="http://localhost:80/upload"
method="post"
enctype="multipart/form-data"
>
<input type="file" name="filename" /> <input type="submit" value="upload" />
</form>

Answer 1

The solution is in my form. I need to set the
action="http://localhost:80/upload"
New HTML is
<h1>Upload File Here</h1>
<form
ref="uploadForm"
id="uploadForm"
action="http://localhost:80/upload"
method="post"
enctype="multipart/form-data"
>
<input type="file" name="filename" /> <input type="submit" value="upload" />
</form>