vue-select/docs/Basics/Values.md

Selecting Values

The most common use case for vue-select is to have the chosen value synced with a parent component. vue-select takes advantage of the v-model syntax to sync values with a parent.

<v-select v-model="selected"></v-select>

If you don't require the value to be synced, you can also pass the prop directly:

<v-select :value="selected"></v-select>

This method allows you to pre-select a value(s), without syncing any changes to the parent component.

Single/Multiple Selection

By default, vue-select supports choosing a single value. If you need multiple values, use the multiple prop:

<v-select multiple :options="countries"></v-select>