title: What the purpose of value-comparator in Vuetify v-select or v-autocomlete
body: <p>After providing a custom function to <code>value-comparator</code>, I have realized that <strong>it's a way to decide which item should appear after</strong> selection is made and the dropdown is closed. </p>
  
  <p>Does this property serve any other purpose, i.e., <code>v-model</code> or <code>dim selected item</code>?</p>