echarts的简单使用

最新推荐文章于 2025-02-26 23:20:18 发布

knight and king

最新推荐文章于 2025-02-26 23:20:18 发布

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文章标签： echarts javascript npm

本文链接：https://blog.youkuaiyun.com/LAM1006_csdn/article/details/122178367

版权

本文介绍了如何使用Echarts，包括通过npm安装，导入所需包，以及利用假数据展示Echarts图表的基本步骤。

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1.下载安装

npm/cnpm install echarts --save

2.导包（导入需要的包，也可以全局引入进行配置）

import * as echarts from 'echarts';

3.代码（此处使用的假数据）

<template>
  <div>
    <van-row style="padding-top: 10px;padding-bottom: 10px">
      <van-col span="12">
        <div id="weekmain" style="width: 400px;height: 300px"></div>
      </van-col>
      <van-col span="12">
        <div id="monthmain" style="width: 400px;height: 300px"></div>
      </van-col>
    </van-row>
  </div>
</template>

<script>
import * as echarts from 'echarts';
export default {
  name: "myweek",
  data(){
    return{

    }
  },
  methods:{
    getmonth(){
      var chartDom = document.getElementById('monthmain');
      var myChart = echarts.init(chartDom);
      var option;

// prettier-ignore
      let dataAxis = ['12-1', '12-2', '12-3', '12-4', '12-5', '12-6', '12-7', '12-8', '12-9', '12-10', '12-11', '12-12', '12-13', '12-14', '12-15', '12-16', '12-17', '12-18', '12-19', '12-20'];
// prettier-ignore
      let data = [100, 99, 11, 34, 90, 30, 10, 23, 42, 21, 90, 49, 10, 22, 33, 34, 98, 23, 25, 20];
      let yMax = 100;
      let dataShadow = [];
      for (let i = 0; i < data.length; i++) {
        dataShadow.push(yMax);
      }
      option = {
        title: {
          text: '特性示例：渐变色 阴影 点击缩放',
          subtext: 'Feature Sample: Gradient Color, Shadow, Click Zoom'
        },
        xAxis: {
          data: dataAxis,
          axisLabel: {
            inside: true,
            color: '#fff'
          },
          axisTick: {
            show: false
          },
          axisLine: {
            show: false
          },
          z: 10
        },
        yAxis: {
          axisLine: {
            show: false
          },
          axisTick: {
            show: false
          },
          axisLabel: {
            color: '#999'
          }
        },
        dataZoom: [
          {
            type: 'inside'
          }
        ],
        series: [
          {
            type: 'bar',
            showBackground: true,
            itemStyle: {
              color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
                { offset: 0, color: '#83bff6' },
                { offset: 0.5, color: '#188df0' },
                { offset: 1, color: '#188df0' }
              ])
            },
            emphasis: {
              itemStyle: {
                color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
                  { offset: 0, color: '#2378f7' },
                  { offset: 0.7, color: '#2378f7' },
                  { offset: 1, color: '#83bff6' }
                ])
              }
            },
            data: data
          }
        ]
      };
// Enable data zoom when user click bar.
      const zoomSize = 6;
      myChart.on('click', function (params) {
        console.log(dataAxis[Math.max(params.dataIndex - zoomSize / 2, 0)]);
        myChart.dispatchAction({
          type: 'dataZoom',
          startValue: dataAxis[Math.max(params.dataIndex - zoomSize / 2, 0)],
          endValue:
              dataAxis[Math.min(params.dataIndex + zoomSize / 2, data.length - 1)]
        });
      });

      option && myChart.setOption(option);
    },
    getweek(){
      var chartDom = document.getElementById('weekmain');
      var myChart = echarts.init(chartDom);
      var option;

      option = {
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'shadow'
          }
        },
        legend: {},
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            type: 'category',
            data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ],
        series: [
          {
            name: 'Direct',
            type: 'bar',
            emphasis: {
              focus: 'series'
            },
            data: [320, 332, 301, 334, 390, 330, 320]
          },
          {
            name: 'Email',
            type: 'bar',
            stack: 'Ad',
            emphasis: {
              focus: 'series'
            },
            data: [120, 132, 101, 134, 90, 230, 210]
          },
          {
            name: 'Union Ads',
            type: 'bar',
            stack: 'Ad',
            emphasis: {
              focus: 'series'
            },
            data: [220, 182, 191, 234, 290, 330, 310]
          },
          {
            name: 'Video Ads',
            type: 'bar',
            stack: 'Ad',
            emphasis: {
              focus: 'series'
            },
            data: [150, 232, 201, 154, 190, 330, 410]
          },
          {
            name: 'Search Engine',
            type: 'bar',
            data: [862, 1018, 964, 1026, 1679, 1600, 1570],
            emphasis: {
              focus: 'series'
            },
            markLine: {
              lineStyle: {
                type: 'dashed'
              },
              data: [[{ type: 'min' }, { type: 'max' }]]
            }
          },
          {
            name: 'Baidu',
            type: 'bar',
            barWidth: 5,
            stack: 'Search Engine',
            emphasis: {
              focus: 'series'
            },
            data: [620, 732, 701, 734, 1090, 1130, 1120]
          },
          {
            name: 'Google',
            type: 'bar',
            stack: 'Search Engine',
            emphasis: {
              focus: 'series'
            },
            data: [120, 132, 101, 134, 290, 230, 220]
          },
          {
            name: 'Bing',
            type: 'bar',
            stack: 'Search Engine',
            emphasis: {
              focus: 'series'
            },
            data: [60, 72, 71, 74, 190, 130, 110]
          },
          {
            name: 'Others',
            type: 'bar',
            stack: 'Search Engine',
            emphasis: {
              focus: 'series'
            },
            data: [62, 82, 91, 84, 109, 110, 120]
          }
        ]
      };

      option && myChart.setOption(option);

    },
  },
  mounted() {
    this.getweek()
    this.getmonth()
  }
}
</script>

<style scoped>

</style>