area chart

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>

<body>
  <div id ="chartID"></div>
	<script>
  var margin = {top:10, right:10, bottom:90, left:10};
  var width = 960 - margin.left - margin.right;
  var height = 360 - margin.top - margin.bottom;

var xScale, yScale;

var svg = d3.select("#chartID").append("svg")
		.attr("width", width+margin.left + margin.right)
		.attr("height",height+margin.top + margin.bottom)

var margin = {top: 20, right: 20, bottom: 30, left: 50},
      width = +svg.attr("width") - margin.left - margin.right,
      height = +svg.attr("height") - margin.top - margin.bottom,
      g = svg.append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")");

var parseTime = d3.timeParse("%d-%b-%y");

xScale = d3.scaleTime()
      .rangeRound([0, width]);

yScale = d3.scaleLinear()
      .rangeRound([height, 0]);

var area = d3.area()
      .x(function(d) { return xScale(d.date); })
      .y1(function(d) { return yScale(d.close); });

var area2 = d3.area()
      .x(function(d) { return xScale(d.date); })
      .y1(function(d) { return yScale(d.forecast); });

d3.tsv("data.tsv", function(d) {
    d.date = parseTime(d.date);
    d.close = +d.close;
    return d;
  }, function(error, data) {
    if (error) throw error;

xScale.domain(d3.extent(data, function(d) { return d.date; }));
    yScale.domain([0, d3.max(data, function(d) { return d.close; })]);
    area.y0(yScale(0));
   	area2.y0(yScale(0));

g.append("path")
        .datum(data)
        .attr("fill", "#d189bf")
        .attr("d", area2);

g.append("path")
        .datum(data)
        .attr("fill", "#6eb647")
        .attr("d", area);

g.append("g")
        .attr("transform", "translate(0," + height + ")")
        .call(d3.axisBottom(xScale));

g.append("g")
        .call(d3.axisLeft(yScale))
      .append("text")
        .attr("fill", "#000")
        .attr("transform", "rotate(-90)")
        .attr("y", 6)
        .attr("dy", "0.71em")
        .attr("text-anchor", "end")
        .text("Price ($)");
  });

document.addEventListener("DOMContentLoaded", resize);
  d3.select(window).on('resize', resize);

function resize() {
    width = parseInt(d3.select('#chartID').style('width'), 10);
    width = width - margin.left - margin.right;

height = parseInt(d3.select("#chartID").style("height"));
    height = height - margin.top - margin.bottom;

console.log('width, height: ', [width, height]);
    
    xScale = d3.scaleTime()
      .rangeRound([0, width]);

yScale = d3.scaleLinear()
      .rangeRound([height, 0]);

svg
      .attr("width", width + margin.left + margin.right)
      .attr("height", height + margin.top + margin.bottom);

//xScale.domain(d3.extent(data, function(d) { return d.date; }));
    //yScale.domain([0, d3.max(data, function(d) { return d.close; })]);
    area.y0(yScale(0));

}
  </script>
</body>

https://d3js.org/d3.v4.min.js