NodeJS passing parameter from HTML form

Question

I am trying to pass parameter from HTML form to NodeJS router. Routing works as expected but i get undefined for parameter value.

I have done it in a past with parameter being a value of input field. However, this time I am trying to do without fields and send parameter as part of action statement.

<form id="form_sidebar" action="/users/navigation?user_id=UserID" method="POST"> 
  <button id = "btn_button" type='submit'>Button</button>
</form>

on router side:

router.post('/navigation', (req, res) => {
  var fname =  req.body['user_id']
  console.log(fname)
})

I was expecting to get UserID printed in the console. But getting undefined.

Any input will be greatly appreciated.

Christian Cavuti · Accepted Answer · 2021-10-12 09:58:37Z

4

Simply you are not accessing the right part of the request since you are passing user_id as query parameter, not inside the request body, so Express seralizes an object with the query parameters. Try to access the parameter in this way:

router.post('/navigation', (req, res) => {
    var fname = req.query.user_id
    console.log(fname)
})

edited Oct 12, 2021 at 9:58

answered Jun 13, 2019 at 13:39

Christian Cavuti

1237 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

NodeJS passing parameter from HTML form

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related