Seconds in datetime-local?

[shefik]

How can I enable inout to accept seconds in input type datetime-local? I tried adding the attribute step="1", but that didn't work.

[shefik]

To clarify, if I add the attribute step="1", click the scroller's up and down arrows does correct increment the datetime per second. However, using the calendar calendar widget does not populate the seconds, which I am also attempting to achieve.