1.echarts下载及安装

1. 安装echarts
步骤一:git bash here中输入: npm install cnpm -g
步骤二:git bash here中输入: cnpm install echarts --save
步骤三:在 main.js 中写入以下内容:
import * as echarts from "echarts";
Vue.prototype.$echarts = echarts;

步骤四:在组件中使用:

<template>
  <div id="main" style="width: 600px;height:400px;"></div>
</template>
<script>
export default {
  name: "HelloWorld",
  mounted(){
    this.drawLine();
  },
  methods:{
    drawLine(){
      // 初始化echarts
      let myChart=this.$echarts.init(document.getElementById('main'));
      // 绘制图表
      myChart.setOption({
        title:{text:'在vue中使用echarts'},
        tooltip:{},
        xAxis:{
          data:["衬衫","羊毛衫","裤子"]
        },
        yAxis:{},
        series:[{
          name:'销量',
          type:'bar',
          data:[5,20,40]
        }]
      })
    }
  }
};
</script>

 

2. echarts初始化报错:cannot read properties of undefined (reading 'init')

//在main.js中将
import echarts from 'echarts';
//改为
import * as echarts from "echarts";

 

3. 报错:echarts is not defined

//
color:new echarts.graphic.LinearGradient(0, 0, 0, 1, [{offset:0,color:'#000'},{offset: 0.5,color:'#888'},{offset:1,color:'#ddd'}])
//改为
color:new this.$echarts.graphic.LinearGradient(0, 0, 0, 1, [{offset:0,color:'#000'},{offset: 0.5,color:'#888'},{offset:1,color:'#ddd'}])

 

4. 报错:initialize failed:invalid dom

原因:在文档没有完全加载之前就运行函数,加载echarts图就可能失败。
方案:通过延时加载echarts图的方法解决这个问题。

 

 

posted @ 2023-07-06 16:18  cjl2019  阅读(478)  评论(0编辑  收藏  举报