How to prevent users from submitting a form with no changes made

1. How do you stop a form from getting submitted?
2. How do I stop a form from refreshing after submitting?
3. How does JavaScript prevent a form from being submitted?

How do you stop a form from getting submitted?

We can stop the form from submission by giving the "return false;" value to the onsubmit event. Giving this value to the event makes the form return nothing and prevent it from submission as well as refreshing the browser.

How do I stop a form from refreshing after submitting?

Using “return false” to stop page refresh on form submit

The “return false” cancels the page refresh.

How does JavaScript prevent a form from being submitted?

The simplest solution to prevent the form submission is to return false on submit event handler defined using the onsubmit property in the HTML <form> element.