Key Press down event in Streamlit SelectBox or Text

Using Streamlit
1

Good day,

May I know can Key Press down event be captured in Streamlit selectbox or text?

The scenario here is like:
selectbox is working fine for a static list and return suggested options according to what I input character by character.

However, a static list is not applicable in my case. I need a dynamic list, whenever I input a character the list shall contain the values returned from a REST API call using the already input characters.

For example: I’ll input g-o-o-d, the API will be called 4 times using “g”,"go“,“goo”,“good” and update the options list for selectbox accordingly in sequence. Is there any feature that can support my scenario?

Thanks for any suggestion from community in advance.

2

Hey @zhll2046,

It sounds like you could accomplish this by using an on_change function for your st.text_input widget. The function would be called when the text input’s value changes. Check out the doc here

3

Actually I need a selectbox, text_input doesn’t have the dropdown list to choose.

4

Unfortunately, Streamlit doesn’t natively support key press events, but you could add on_change event to your selectbox (related doc here)

5

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