Taro 中 echarts 图表使用

1 下载 echarts4taro3

yarn add echarts4taro3 或
pnpm add echarts4taro3 或
npm i echarts4taro3 --save

2 图表初始化需要先加载echarts模块

import * as echarts from "echarts4taro3/lib/assets/echarts"; // 这里用了内置的，也可以用自定义的 echarts.js
import { EChart ,loadEcharts } from "echarts4taro3";

如果图表较多，建议放在app.ts里先引入

// app.tsimport { createApp } from 'vue'import './app.less'
import * as echarts from "echarts4taro3/lib/assets/echarts"; // 这里用了内置的，也可以用自定义的 echarts.js
import { EChart ,loadEcharts } from "echarts4taro3";const App = createApp({onShow(options) {},created() {loadEcharts(echarts);},// 入口组件不需要实现 render 方法，即使实现了也会被 taro 所覆盖
})export default App

3 页面使用

index.less.bar-chart {width: 100%;height: 100vh;
}

<template><view class="bar-chart"><EChart ref="canvas" canvas-id="bar-canvas" /></view>
</template><script setup>
import Taro from "@tarojs/taro";
import "./index.less";
import { EChart } from "echarts4taro3";
import { onMounted, ref } from "vue";const canvas = ref(null);onMounted(() => {const echartComponentInstance = canvas.value;const option = {tooltip: {trigger: "axis",axisPointer: {// 坐标轴指示器，坐标轴触发有效type: "shadow" // 默认为直线，可选为：'line' | 'shadow'}},xAxis: {type: "category",data: ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]},yAxis: {type: "value"},series: [{data: [120, 200, 150, 80, 70, 110, 130],type: "bar"}]};Taro.nextTick(() => {echartComponentInstance.refresh(option);});
});
</script>