We know how to pass data to a child component through props. In this lesson, we'll learn how to communicate from a child to a parent component through custom events.
We will use a custom event to notify the plan-picker of which plan has been selected, and make sure we have the right logic in place so the user can only select one plan at a time.
Important Note
Since Vue.js 3 became the default you must now specify version 2 when getting Vue from a CDN.
<script src="https://unpkg.com/vue@2"></script>