echarts中dataZoom的使用（与坐标轴重叠，与无论后台数据有多少，页面展示的数据量正合适）

<template>
  <div ref="chart" id="Chart" style="width:100%;height:400px;"></div>
</template>

<script>
export default {
  data() {
    return {}
  },
  props: [‘title‘, ‘classList‘, ‘data‘,‘dataZoom‘],
  methods: {
   chart() {
      // 基于准备好的dom，初始化echarts实例
      let myChart = this.$echarts.init(document.getElementById(‘Chart‘))
      // 绘制图表
      myChart.setOption({
        color: [‘#3398DB‘,‘red‘],
        title: {
          x: ‘left‘,
          text: this.title
        },
        legend: {
          left: ‘right‘,
          top: ‘top‘
        },
        tooltip: {
          trigger: ‘axis‘,
          axisPointer: {
            type: ‘shadow‘
          }
        },
        grid: {
          left: ‘3%‘,
          right: ‘4%‘,
          bottom: ‘12%‘,
          containLabel: true
        },
        xAxis: [
          {
            type: ‘category‘,
            data: this.classList,
            axisTick: {
              alignWithLabel: true
            },
            axisLabel: {
              //设置x轴的字
              show: true,
              interval: 0, //使x轴横坐标全部显示
              rotate: 50, //倾斜度 -90 至 90 默认为0
              formatter: function(value, index) {
                if (value.length > 8) {
                  return value.substr(0, 5) + ‘...‘
                } else {
                  return value
                }
              }
            }
          }
        ],
        yAxis: [
          {
            type: ‘value‘,
            name: ‘人数‘,
            boundaryGap: [0, ‘100%‘]
          }
        ],
        series: [
          {
            name: this.data,
            type: ‘line‘,
            barWidth: ‘60%‘,
            data: this.data
          },
        ],
        dataZoom:this.dataZoom?this.dataZoom:[]
       
      })
      window.onresize = function() {
        myChart.resize()
      }
    }
  },
  created() {},
  mounted() {
    this.chart()
  }
}
</script>
<style scoped>
</style>

 this.dataZoom[0].end=10/this.source.length*100