const app = Vue.createApp({
  data() {
    return {
      items: []
    };
  },
  mounted() {
    fetch("data/sponsors.json")
      .then(res => res.json())
      .then(data => {
        this.items = data;
      })
      .catch(err => console.error("スポンサーJSON読込失敗:", err));
  }
});

app.mount("#vue-sponsor");