vue3 组件

    <div id="vm">
        <button-counter></button-counter>
    </div>
    <script>
        const v = Vue.createApp({
            data() {
                return {
                    count: 0
                }
            },
            template:
                `<button @click="count++">次数：{{count}}</button>`
        }).mount(‘#vm‘)
    </script>