Bubble Charts in Nodejs

How to make a bubble chart in nodejs. Examples of scatter charts whose markers have variable color, size, and symbols.

Marker Size, Color, and Symbol as an Array

// Learn about API authentication here: https://plotly.com/nodejs/getting-started
// Find your api_key here: https://plotly.com/settings/api

require('plotly')(username, api_key);

var trace1 = {
  x: [1, 2, 3, 4],
  y: [10, 11, 12, 13],
  mode: "markers",
  marker: {
    color: ["hsl(0,100,40)", "hsl(33,100,40)", "hsl(66,100,40)", "hsl(99,100,40)"],
    size: [12, 22, 32, 42],
    opacity: [0.6, 0.7, 0.8, 0.9]
  },
  type: "scatter"
};
var trace2 = {
  x: [1, 2, 3, 4],
  y: [11, 12, 13, 14],
  mode: "markers",
  marker: {
    color: "rgb(31, 119, 180)",
    size: 18,
    symbol: ["circle", "square", "diamond", "cross"]
  },
  type: "scatter"
};
var trace3 = {
  x: [1, 2, 3, 4],
  y: [12, 13, 14, 15],
  mode: "markers",
  marker: {
    size: 18,
    line: {
      color: ["rgb(120,120,120)", "rgb(120,120,120)", "red", "rgb(120,120,120)"],
      width: [2, 2, 6, 2]
    }
  },
  type: "scatter"
};
var data = [trace1, trace2, trace3];
var layout = {showlegend: false};
var graphOptions = {layout: layout, filename: "bubblechart", fileopt: "overwrite"};
plotly.plot(data, graphOptions, function (err, msg) {
    console.log(msg);
});