Check out example codes for "vue v-for". It will help you in understanding the concepts better.
Code Example 1
<ul id="example-1">
<li v-for="item in items" :key="item.message">
{{ item.message }}
</li>
</ul>
Code Example 2
<ul>
<li v-for="(val, index) in arr">
<!-- Do something... -->
</li>
</ul>
Code Example 3
<!-- To gain access to the array index: -->
<ul>
<li v-for="(game, index) in games"></li>
</ul>
<!--
You only want the index in specific cases. Use `:key` as
standard. See the other greps.
-->
Code Example 4
<ul>
<li v-for="(item, index) in items">
{{ index }} - {{ item }}
</li>
</ul>
Code Example 5
<option v-for="(location, index) in locations" v-bind:value="location.id" v-bind:selected="index === 0">
{{ location.from }} - {{ location.to }}
</option>
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