如何使用composition创建Vuetify加载按钮

npm install vue vuetify

import { ref } from 'vue';
import { VBtn } from 'vuetify/lib';

const isLoading = ref(false);

<template>
  <div>
    <v-btn
      :loading="isLoading"
      @click="handleClick"
    >
      {{ isLoading ? '加载中...' : '加载按钮' }}
    </v-btn>
  </div>
</template>

const handleClick = () => {
  isLoading.value = true;

  // 模拟异步操作
  setTimeout(() => {
    isLoading.value = false;
  }, 2000);
};