在plotly.js时间序列的垂直线末端添加圆

var trace1 = {
  x: [1, 2, 3, 4, 5],
  y: [1, 3, 2, 4, 3],
  mode: 'lines',
  name: '时间序列'
};

var data = [trace1];

var layout = {
  title: '时间序列图',
  shapes: [
    {
      type: 'line',
      x0: 3,
      x1: 3,
      y0: 0,
      y1: 5,
      line: {
        color: 'red',
        width: 2
      }
    },
    {
      type: 'circle',
      x0: 3,
      y0: 5,
      x1: 3.2,
      y1: 5.2,
      fillcolor: 'blue',
      line: {
        color: 'blue'
      }
    }
  ]
};

Plotly.newPlot('myDiv', data, layout);