Chrome page refresh issue

Pressing Enter on the input field submits the form, which depending on your form action attribute may submit the form to the same page (which will cause it to appear as an update). This is the intended behavior. If you're talking about a text area, then this is a completely different matter (and probably related to some kind of custom JavaScript event).

If this is not what you mean, you will need to clarify your question. At least please post an HTML excerpt that covers your <form> tags.