When you hit enter on a checkbox or radio button, it submits the form but does not click any submit button. Pressing enter in an input submits by clicking a submit button, so these should click the same one and use the same algorithm. IE exhibits the desired behavior.

Focus a checkbox and hit enter. A "clicked" alert should come up and x=y should show on the URL line, but it does not.

(Note that they *do* submit, they just don't submit using the input type=text algorithm.)

Neil, any chance you could test IE on the second testcase here and let me know what it does?

Whether this is good depends on what IE does on that testcase...

Taking

FWIW, IE5 behaviour appears to be as follows: 1. If the form has exactly one ordinary input, which has the focus, then submit *without* clicking the submit button, for Netscape 4.x compatibility. 2. If a submit button exists, then click it. 3. Otherwise, don't submit. Mozilla 1.4 appears to be as follows: 1. If the focus is not on an ordinary input, then submit. 2. If a submit button exists, then click it. 3. If the form has exactly one ordinary input, then submit. 4. Otherwise, don't submit. So, the behaviour differs for all checkboxes plus form 6's input.

By "ordinary input" you mean <input type="text">? So in form 6, hitting enter on the checkbox clicks the button? And hitting enter on the text input does not?

Oh, I recall now. The difference for the text input in form 6 we introduced purposefully. See bug 147850 So to recap. The behavior when hitting enter on the various inputs in IE is as follows: Form 2: does not submit Form 3: submits on textfield, not on checkbox Form 4: does not submit Form 5: submits by clicking button Form 6: submits by clicking button on checkbox, just submits on textfield Form 7: submits by clicking button That about sum it up? With the patch I attached, our behavior is like that with two exceptions: The form 6 exception you pointed out, and we submit on the checkbox in form 3. That seems a little more consistent to me....

Looks good to me.

Comment on attachment 136159 [details] [diff] [review] Possible patch jst, what do you think?

Comment on attachment 136159 [details] [diff] [review] Possible patch I don't like the fact that hitting enter causes a click event to be generated, but given that that's the way the web expects browsers to work, we don't really have a choice... r+sr=jst

Checked in for 1.7a.