Upload button is not responding to click event

Hi I am new to node js and I want to upload a file to a server using jade, node js and express.

I recently created the following form using the jade template .

//HTML for creating the video uploader extends layout

 block content   h1= title
       form(name="uploadVideo",method="post",action="/uploadVideo")
       input(type="file", name="filePath")

 button#btnSubmit(type="submit") Upload

I added the following to the app.js

app.post('/uploadVideo',function(req,res) {
  console.log("Came here !!");   
});

However, clicking on the Upload button does nothing. What can I change to make it work ?