{"id":13604049,"url":"https://github.com/WsmDyj/echarts-for-taro","last_synced_at":"2025-04-11T22:32:26.079Z","repository":{"id":36422468,"uuid":"164043770","full_name":"WsmDyj/echarts-for-taro","owner":"WsmDyj","description":"📜Echarts component library for 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TaroEcharts简介\n本项目是在实际开发中总结出来的一套基于ec-canvas封装的适用于Taro版本的图表框架。开发者可以通过简单的配置及 React 的语法，快速开发图表，满足各种可视化需求。\n\n#### 微信小程序预览：\n![TaroECharts Demo](https://user-gold-cdn.xitu.io/2019/1/17/1685a1063cc8a9bf?w=439\u0026h=413\u0026f=png\u0026s=106489)\n## 实现过程\n### 1 下载\n为了兼容小程序 Canvas，我们首先去构建ec-canvas下载到本地。其中ec-canvas是echarts官网提供的组件，我们可以自行下载或者去[官网自定义构建](https://echarts.baidu.com/builder.html)选择自己需要的图表或插件进行下载。\n### 2 引入组件\n在项目中引入我们需要的组件库，这里统一将其放在`src/components/ec-canvas`文件夹下。大家可将[该文件夹](https://github.com/WsmDyj/echarts-for-taro/tree/master/src/components/ec-canvas)导入到自己项目中去。其中echarts.js就是刚我们自行下载的echarts图表插件，可根据实际项目需求自定义下载所需图表然后将其导入。\n### 3 创建图表(以饼图为例)\n### 3.1 新建图表组件\n在`components`文件夹下创建`pieCharts.js`组件。引入我们刚创建的组件\n\u003e import * as echarts from \"./ec-canvas/echarts\";\n\n### 3.2 懒加载渲染图表\n配置我们的ec-canvas\n```\nconfig = {\n    usingComponents: {\n        \"ec-canvas\": \"./ec-canvas/ec-canvas\"\n    }\n};\n```\n在render函数中使用刚导入的ec-canvas\n```\n\u003cec-canvas\n    ref={this.refChart}\n    canvas-id=\"mychart-area\"\n    ec={this.state.ec}\n/\u003e\n ```\n构建refresh函数初始化图表\n```\nrefresh(data) {\n    this.Chart.init((canvas, width, height) =\u003e {\n      const chart = echarts.init(canvas, null, {\n        width: width,\n        height: height\n      });\n      setChartData(chart, data);\n      return chart;\n    });\n  }\n\n  refChart = node =\u003e (this.Chart = node);\n```\n配置懒加载图表\n```\nstate = {\n    ec: {\n      lazyLoad: true\n    }\n };\n```\n### 3.3 配置我们所需图表的option \n这里在setChartData进行配置，并传入charts,data参数。\n```\n\nfunction setChartData(chart, data) {\n  let option = {\n    series : [\n      {\n        name: '访问来源',\n        type: 'pie',\n        center: ['50%', '50%'],\n        radius: [0, '60%'],\n        data: data,\n        itemStyle: {\n          emphasis: {\n            shadowBlur: 10,\n            shadowOffsetX: 0,\n            shadowColor: 'rgba(0, 0, 0, 0.5)'\n          }\n        }\n      }\n    ]\n  };\n  chart.setOption(option);\n}\n```\n至此饼图已经创建完成，具体的可参考[饼图](https://github.com/WsmDyj/echarts-for-taro/blob/master/src/components/PieChart.js)\n\n## 4 实例化图表\n在需要图表的页面中导入刚创建的图表([饼图](https://github.com/WsmDyj/echarts-for-taro/blob/master/src/pages/Pie/Pie.js))\n\u003e import PieChart from \"../../components/PieChart\";\n\nrender函数中导入\n``` \n\u003cPieChart ref={this.refPieChart} /\u003e\n```\n实例化图表并传入data\n```\ncomponentDidMount() {\n    const chartData = [\n      {value:335, name:'直接访问'},\n      {value:310, name:'邮件营销'},\n      {value:234, name:'联盟广告'},\n      {value:135, name:'视频广告'},\n      {value:1548, name:'搜索引擎'}\n    ];\n    this.pieChart.refresh(chartData);\n  }\n  refPieChart = (node) =\u003e this.pieChart = node\n ```\n 至此饼图已经创建完成，饼图如此其他的都是类似的。只要照着这个方式去设置option,我们就可以创建你想要的图表了。\n\n## FAQ\n### 可滑动的图表？\n\n添加配置dataZoom可对图表进行缩放达到滑动的效果，可以参考 `pages/Move/Move` 的写法。\n\n### 多图表结合在一起？\n\n参见 `pages/More/More` 的例子，可以在获取数据后再初始化数据。\n\n### 如何在一个页面中加载多个图表？\n\n参见 `pages/Add/Add` 的例子。\n\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FWsmDyj%2Fecharts-for-taro","html_url":"https://awesome.ecosyste.ms/projects/github.com%2FWsmDyj%2Fecharts-for-taro","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FWsmDyj%2Fecharts-for-taro/lists"}