Hello,
I have been trying to cancel a form submission in case it failed a validation test. I hooked up the submit() event, passing in an anonymous function that called event.preventDefault() or returned false in case validation failed. However, I discovered that when I used this method in Sharepoint generated forms, the code is permanently prevented from submissions, even when my validation passes and I return a true from my anonymous function. The submit seems to work fine when I remove a reference to a key .js file required by SP, however as you could guess, that is undesirable. The library really needs to have a function to explicitly reverse preventDefault.