title: Vuetify - First keypress event value is always an empty string
body: <p>I want the user to not be able to insert a number bigger than 100.</p>
  <p>The below excerpt is a simplified production code.
  For some reason which I do not yet understand is that the first keypress always returns an empty string.</p>
  <p>If you would type <code>101</code> in the input, the <code>event.target.value</code> value will be <code>01</code>.</p>
  <p>How can I fix this?</p>
  <pre><code>&lt;v-text-field
      type=&quot;number&quot;
      @keypress=&quot;formatNumber($event)&quot;
  &gt;
  &lt;/v-text-field&gt;
  
  formatNumber(event) {
      console.log(event.target.value); // first keypress returns empty string
  
      if (event.target.value  &gt; 100) {
          event.target.value = null;
      }
  }
  </code></pre>