How to stop a form from submitting?

Question

How do you stop a form in javascript from submitting if the information does not match. One example being a password and a password confirm not matching. How would you stop it from submitting?

Answer 1

Generally, I prefer not to use a "submit" button. I create a button to call a validation routine, and, if the form elements pass all of the validation requirements, then the function calls the submit() method on the form; otherwise, some error handling is invoked.

Answer 2

Use the "return false" command.
For example:

Answer 3

Here's a dhtml form validation example:

http://www.dhtmlgoodies.com/index.html?whichScript=dhtml-form-validation