Chrome Autofill/Autocomplete no value for password

Question

When you have saved username and password for some site Chrome will autofill that username and password, but if you try to get the value for the password input field it is e

Answer 1

Chrome's intended behavior is that an auto-filled password has an empty value in the DOM until the user interacts with the frame in some way, at which point chrome actually populates the value. Until this point any client side validation or attempt to ajax submit the form will see the password as empty.

This 'populate password value on frame interaction' behavior is inconsistent. I've found when the form is hosted in a same-origin iframe it only operates on the first load, and never on subsequent loads.

This is most evident on ajax forms where the autocomplete password populates on first load, however if that password is invalid and the ajax submission re-renders the form DOM, the autocompleted password re-appears visually but the value is never populated, irrespective of interaction.

None of the workarounds mentioned such as triggering blur or input events worked in this scenario. The only workaround I've found is to reset the password field value after the ajax process re-renders the form, e.g.:

$('input[type="password"]').val("");

After the above, Chrome actually autocompletes the password again but with the value actually populated.

In my current use case I'm using ASP.NET's Ajax.BeginForm and use the above workaround in the AjaxOptions.OnSuccess callback.