v-on:click

<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>

<div id="app">
    <p>{{count}}</p>
    <button v-on:click="addCount">+</button>
</div>

<script>
    Vue.createApp({
        data() {
            return {
                count: 0,
            };
        },
        methods: {
            addCount() {
                this.count++;
            },
        },
    }).mount("#app");
</script>

v-on:click -> @click으로 생략이 가능!!