vue template key code example
Example 1: vue v-for
<ul id="example-1">
<li v-for="item in items" :key="item.message">
{{ item.message }}
</li>
</ul>
Example 2: v-for
<ul id="example-2">
<li v-for="(item, index) in items">
{{ parentMessage }} - {{ index }} - {{ item.message }}
</li>
</ul>