title: How to get ongoing index in nested v-for loops
body: <p>I have some nested loops. The parent component loops a child component, the child component loops a grandchild component.</p>
  
  <pre><code>&lt;div class="parent"&gt;
     &lt;div class="child" :v-for="(child, childindex) in children"&gt;
        &lt;div class="grandchild" :v-for="(grandchild, grandchildindex) in grandchildren"&gt;
           Some Stuff
        &lt;/div&gt;
     &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>The index would give me something like</p>
  
  <pre><code>Child 0
     Grandchild 0
     Grandchild 1
  Child 1
     Grandchild 0
     Grandchild 1
     Grandchild 2
  </code></pre>
  
  <p>and so on.</p>
  
  <p>What I need however is this:</p>
  
  <pre><code>Child 0
     Grandchild 0
     Grandchild 1
  Child 1
     Grandchild 2
     Grandchild 3
     Grandchild 4
  </code></pre>
  
  <p>So how can i get the grandchild index ongoing?</p>