How do I prevent an on.submit event from changing/reloading the page?

Question

In Javascript when I provide an onSubmit function, and I return \'false\' from the function, it prevents the page from changing/reloading.

Answer 1

Within the on.submit.add(...) callback, you will receive the Event as an argument. The Event object provides a preventDefault() method to prevent or cancel the default action.

It can be used as follows:

querySelector('#myForm').onSubmit.listen((Event e) {
  // ... your code here
  e.preventDefault();
});