Unable get value of an input field before focus switch

Having issue where we seem unable to get value of input field before user switches focus

Example use case: Simple form with 1 text input field, must be filled out then submit button can enable.

Attempted implementation: connect to "change" events on input field, after each change event, look at the v_model and if not empty, enable the submit button

Problem observed: User enters text but submit still disabled. "Change" event doesn't fire when user finishes, only when focus switches

Attempted solution: Connect to keyup event, but seems no way to get the current value of the input field

Should be able to work-around by making a custom template object with javascript (e.g. https://stackoverflow.com/questions/59191213/how-to-get-current-value-on-keypress), but should there be some way to do this without making custom template?

Reproduce the input-field behavior described for change and keyup events, checking when v_model receives the entered value. Trace ipyvuetify's input event and v_model handling; done means a submit control can react to typed text before focus switches without requiring a custom JavaScript template.