var options = {
  series: [
    {
      name: 'Session Duration',
      data: [45, 52, 38, 24, 33, 26, 21, 20, 6, 8, 15, 10],
    },
    {
      name: 'Page Views',
      data: [35, 41, 62, 42, 13, 18, 29, 37, 36, 51, 32, 35],
    },
    {
      name: 'Total Visits',
      data: [87, 57, 74, 99, 75, 38, 62, 47, 82, 56, 45, 47],
    },
  ],
  chart: {
    height: 350,
    type: 'line',
    zoom: {
      enabled: false,
    },
  },
  dataLabels: {
    enabled: false,
  },
  stroke: {
    width: [5, 7, 5],
    curve: 'straight',
    dashArray: [0, 8, 5],
  },
  title: {
    text: 'Page Statistics',
    align: 'left',
  },
  legend: {
    tooltipHoverFormatter: function (val, opts) {
      return (
        val +
        ' - <strong>' +
        opts.w.globals.series[opts.seriesIndex][opts.dataPointIndex] +
        '</strong>'
      )
    },
  },
  markers: {
    size: 0,
    hover: {
      sizeOffset: 6,
    },
  },
  xaxis: {
    categories: [
      '01 Jan',
      '02 Jan',
      '03 Jan',
      '04 Jan',
      '05 Jan',
      '06 Jan',
      '07 Jan',
      '08 Jan',
      '09 Jan',
      '10 Jan',
      '11 Jan',
      '12 Jan',
    ],
  },
  tooltip: {
    y: [
      {
        title: {
          formatter: function (val) {
            return val + ' (mins)'
          },
        },
      },
      {
        title: {
          formatter: function (val) {
            return val + ' per session'
          },
        },
      },
      {
        title: {
          formatter: function (val) {
            return val
          },
        },
      },
    ],
  },
  grid: {
    borderColor: '#f1f1f1',
  },
}

var chart = new ApexCharts(document.querySelector('#chart'), options)
chart.render()
Dashed Line - JavaScript Line Charts | ApexCharts.js | ApexCharts.js