In the context of web development, one of the biggest offenders (in my experience) is coders who attach a "validate this form/submit it via AJAX" handler to the

In the context of web development, one of the biggest offenders (in my experience) is coders who attach a "validate this form/submit it via AJAX" handler to the form submit button's click event, instead of the form's submit event. If I try using Enter to submit the form, their code doesn't run.