var plot1 = {

  x: [1, 2, 3, 4, 5],

  y: [1, 6, 3, 6, 1],

  mode: 'markers',

  type: 'scattergl',

  marker: { 

    symbol: 'triangle-up'

  }

};

​

var plot2 = {

  x: [1, 2, 3, 4, 5],

  y: [2, 7, 4, 7, 2],

  mode: 'markers',

  type: 'scattergl',

  marker: { 

    //symbol: 'x-dot'

  }

};

​

Plotly.newPlot('myDiv', [ plot1, plot2 ], {});