title: Callback for v-show in vue.js
body: <p>Is there a callback method like on-shown and on-show using vue.js?</p>
  
  <p>I'm using v-show="my-condition" on a div element. But inside are some charts.js charts, which cannot render unless visible. </p>
  
  <p>Anyone know how can render the chart.js only when the parent is made visible? They are inside selectable tabs so it fires potentially multiple times.  </p>
  
  <p>I'm using Vue.js and vue-strap. </p>