Delay callback of input component

Dash Python
1

Is there a way to delay the callback call for an dcc.Input component? Currently, the callback seems to basically be run for every character entered. Or maybe there’s a away to only run the callback after the user pressed enter?

2

Yes! See https://github.com/plotly/dash-core-components/pull/326
There’s new props for dcc.Input in dash-core-components==0.35.0.

  • n_submit , The number of times enter was pressed when the component had focus.
  • n_blur , The number of times the component lost focus.

Try using n_submit or n_blur in your function should solve your problem.

4 Likes
3

You can set debounce = True which will only process the value if enter is pressed or the user clicks elsewhere on the screen.

4

Where do you type this field for this functionality to kick in? @sparrow

6

As an input param:

dcc.Input(
    id='min-back',
    type='number',
    value=30,            
    style={'fontSize':28},
    debounce = True
),