stacked chart

Stacked Bar Chart.

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
 
 <script src="https://d3js.org/d3.v5.min.js"></script>
  <style>

body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>

<body>
  <script>
    // Feel free to change or delete any of the code you see in this editor!
    const margin = {
      top: 100,
      left: 100,
      right: 100,
      bottom: 100
    };
    const width = 960 - margin.left - margin.right;
    const height = 500 - margin.top - margin.bottom;
    var svg = d3.select("body").append("svg")
      .attr("width", width + margin.left + margin.right)
      .attr("height", height + margin.top+margin.bottom)
    	.style("background-color", "rgba(0,0,0,0.1)");

//Container for the gradients
var defs = svg.append("defs");

//Filter for the outside glow
var filter = defs.append("filter")
    .attr("id","glow");
filter.append("feGaussianBlur")
    .attr("stdDeviation","10")
    .attr("result","coloredBlur");
// var feMerge = filter.append("feMerge");
// feMerge.append("feMergeNode")
//     .attr("in","coloredBlur");
// feMerge.append("feMergeNode")
//     .attr("in","SourceGraphic");

const g = svg.append("g").attr("transform", `translate(${margin.left}, ${margin.top})`);
    
    const parseDate = d3.timeParse("%Y %b %d");

const x = d3.scaleTime().range([0, width]);
    const y = d3.scaleLinear().range([height, 0]).domain([0, 100]);
    const c = d3.scaleOrdinal(d3.schemePaired);
    
    const area = d3.area()
    	.x(d=>x(d.data.date))
    	.y0(d=>y(d[0]))
    	.y1(d=>y(d[1]))

</script>
</body>

https://d3js.org/d3.v5.min.js