大数据BI可视化(Echarts组件)项目开发-熟悉交互API5.0

全局echarts对象

init初始化
registerTheme注册主题

    var mCharts = echarts.init(document.querySelector("div"), 'itcast')

registerMap地图图表

connect

代码

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <script src="lib/echarts.min.js"></script>
  <script src="theme/itcast.js"></script>
  <script src="lib/jquery.min.js"></script>
</head>

<body>
  <div style="width: 600px;height:400px;border: 1px solid red"></div>
  <div style="width: 600px;height:400px;border: 1px solid green" id="div1"></div>
  <script>
    var mCharts = echarts.init(document.querySelector("div"), 'itcast')
    var xDataArr = ['张三', '李四', '王五', '闰土', '小明', '茅台', '二妞', '大强']
    var yDataArr = [88, 92, 63, 77, 94, 80, 72, 86]
    var option = {
      toolbox: {
        feature: {
          saveAsImage: {}
        }
      },
      xAxis: {
        type: 'category',
        data: xDataArr
      },
      yAxis: {
        type: 'value'
      },
      series: [
        {
          type: 'bar',
          data: yDataArr,
          markPoint: {
            data: [
              {
                type: 'max', name: '最大值'
              },
              {
                type: 'min', name: '最小值'
              }
            ]
          },
          markLine: {
            data: [
              {
                type: 'average', name: '平均值'
              }
            ]
          },
          label: {
            show: true,
            rotate: 60
          },
          barWidth: '30%'
        }
      ]
    }
    mCharts.setOption(option)

    var mCharts2 = echarts.init(document.querySelector('#div1'))
    $.get('json/map/china.json', function(ret){
      echarts.registerMap('aa', ret)
      var option2 = {
        geo: {
          type: 'map',
          map: 'aa'
        }
      }
      mCharts2.setOption(option2)
      // echarts.connect([mCharts, mCharts2]) // 将柱状图和地图关联起来
    })
    

  </script>
</body>

</html>

echartsInstance对象

setOption

resion

on\off

dispatchAction

clear
dispose

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <script src="lib/echarts.min.js"></script>
  <script src="lib/jquery.min.js"></script>
</head>

<body>
  <div style="width: 600px;height:400px"></div>
  <button id="btn1">触发行为</button>
  <button id="btn2">clear</button>
  <button id="btn3">setOption</button>
  <button id="btn4">dispose</button>
  <script>
    var mCharts = echarts.init(document.querySelector("div"))
    var pieData = [
      {
        value: 11231,
        name: "淘宝",
      },
      {
        value: 22673,
        name: "京东"
      },
      {
        value: 6123,
        name: "唯品会"
      },
      {
        value: 8989,
        name: "1号店"
      },
      {
        value: 6700,
        name: "聚美优品"
      }
    ]
    var option = {
      legend: {
        data: ['淘宝', '京东', '唯品会', '1号店', '聚美优品']
      },
      tooltip: {
        show: true
      },
      series: [
        {
          type: 'pie',
          data: pieData
        }
      ]
    }
    mCharts.setOption(option)
    mCharts.on('click', function (arg) {
      console.log(arg)
      console.log('click...')
    }) // 对事件进行监听

    mCharts.off('click') // 解绑click的事件

    mCharts.on('legendselectchanged', function (arg) {
      console.log(arg)
      console.log('legendselectchanged')
    })

    $('#btn1').click(function () {
      // 模拟用户的行为
      mCharts.dispatchAction({
        type: 'highlight',
        seriesIndex: 0, // 系列的索引
        dataIndex: 1 // 数据的索引
      })
      mCharts.dispatchAction({
        type: 'showTip',
        seriesIndex: 0,
        dataIndex: 2
      })
    })

    $('#btn2').click(function () {
      // 清空图表的实例
      mCharts.clear()
    })

    $('#btn3').click(function () {
      // 重新设置option
      mCharts.setOption(option)
    })

    $('#btn4').click(function () {
      // 销毁mCharts
      mCharts.dispose()
    })
  </script>
</body>

</html>

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