SOURCE

Vue.component('son', {
    template: `
        <h3>{{ title }}</h3>
    `,
    props: ['title']
})
const vm = new Vue({
    el: '#app',
    data: {
        message: 'hello'
    },
})

<script src="https://cdn.jsdelivr.net/npm/vue@2.6.14/dist/vue.js"></script>
<div id="app">
    {{ message }}
    <son title="world" />
</div>