{{ n }}
import { ref, onMounted, nextTick } from 'vue'
const chartRef = ref(null)
const data = ref([])
const initChart = async () => {
// 等待数据加载完成
await fetchData()
// 👈 等待 DOM 更新后再渲染图表
await nextTick()
const chart = echarts.init(chartRef.value)
chart.setOption({ ... })
}