ionic4 使用Echarts

1，npm install echarts --save

2，npm install @types/echarts --save

1.頁面中聲明容器
<ion-content>
  <div class="echarts" id="chart"></div>
</ion-content>

2.css中寫樣式寬高不支援百分比
.echarts{
    width: 340px;
    height: 200px;
    margin: 0 auto;
}

3. ts中引入echarts

import * as echarts from 'echarts';


  ngOnInit() {
    this.initEchart();
  }
  public chart: any;
  initEchart() {
    let ec = echarts as any;
    let container = document.getElementById('chart');
    this.chart = ec.init(container);
    let option = {
      tooltip: {
        trigger: 'axis'
      },
      legend: {
        data: ['郵件營銷', '聯盟廣告', '視訊廣告', '直接通路', '搜尋引擎']
      },
      grid: {
        left: "2%",
        right: "3%",
        bottom: "1%",
        borderWidth:10,
        containLabel: true
      },
      toolbox: {
        feature: {
          saveAsImage: {}
        }
      },
      xAxis: {
        type: 'category',
        boundaryGap: false,
        data: ['周一', '周二', '周三', '周四', '周五', '周六', '周日']
      },
      yAxis: {
        type: 'value'
      },
      series: [
        {
          name: '郵件營銷',
          type: 'line',
          stack: '總量',
          data: [120, 132, 101, 134, 90, 230, 210]
        },
        {
          name: '聯盟廣告',
          type: 'line',
          stack: '總量',
          data: [220, 182, 191, 234, 290, 330, 310]
        },
        {
          name: '視訊廣告',
          type: 'line',
          stack: '總量',
          data: [150, 232, 201, 154, 190, 330, 410]
        },
        {
          name: '直接通路',
          type: 'line',
          stack: '總量',
          data: [320, 332, 301, 334, 390, 330, 320]
        },
        {
          name: '搜尋引擎',
          type: 'line',
          stack: '總量',
          data: [820, 932, 901, 934, 1290, 1330, 1320]
        }
      ]
    };

    this.chart.setOption(option);
  }

           

4,修改echart 折線點的大小與形狀

1. symbol: 'circle',//折線點設定為實心點
2. symbolSize: 4, //折線點的大小