How to call a server-side NodeJS function using client-side JavaScript

Question

I'm working on creating a basic login system, and since the server-side uses NodeJS, but client-side doesn't. I have to make any calls that use NPM packages on the server side. The issue is I have no clue how to call a server-side NodeJS function from the Client-Side JavaScript. Basically I wan't to be able to call a function that's stored on the server from the client browser.

Answer 1

Make a route in your nodejs application like so:

app.get('/users', function(req, res) {
 // Your function to be called goes here.
});

Now you can call this code from your client side javascript using ajax. Like this:

$.ajax({
 type: 'GET'
 url: 'http://localhost:8000/users',
 success: function(response) { 
  console.log(response);
 },
 error: function(xhr, status, err) {
   console.log(xhr.responseText);
 }
});