When I was playing around with
formaction attribute I learned something interesting about the way the attribute interacts with Enter-triggered submit events. I'm documenting my findings here to help others - and my future self - debug this undocumented behavior. Note: Everything discussed about
formaction applies identically to
formtarget attributes as well.
First, a recap from the previous article. To trigger a submit event via Enter the three ingredients listed below need to be present.
an additional submit-triggering button, unless
<form>that contains the
formaction attribute allows a submit-triggering element to submit
<input> values to a URL different from the one determined by the <form> element it is in. When
formaction attribute isn't used, that URL is determined by the
action attribute on the
<form>, and if there is no
action attribute then it defaults to the URL of the current page + the
<input> values encoded in a search string.
Let's consider two scenarios listed below in which Enter triggers a submit event.
One submit-triggering element with
formaction attribute. As expected, in this case the
formaction attributes wins over
Multiple submit-triggering elements with
formaction attribute. However, in this case it's the first
formaction attribute that wins not only over the
action attribute but over other