When options is obtained asynchronously from the background, how to initialize Select?

I did it with select, but option is asynchronously assigned from the background, and value is also asynchronously obtained.
how to initialize at this time. After the value assignment, the input is correct, but the text in the text box does not display

Oct.10,2021

after you get the data, you can set the v-mode and options of the binding

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