bar 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>
  <script>
    // Feel free to change or delete any of the code you see in this editor!
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500)
		
    var data = [10, 20, 500, 40, 30, 50, 20, 85, 100, 340, 30, 50, 100, 85, 100, 200 ];
    var y = d3.scaleLinear()
    	.domain([0, d3.max(data)])
    	.range([0, 200]);
    var x = d3.scaleBand()
    	.domain(d3.range(data.length))
    	.range([0, 700]);
    var color = d3.scaleOrdinal(d3.schemeCategory20);
    var color2 = d3.scaleLinear()
    	.domain(d3.extent(data))
    	.range(["blue", "red"]);

svg.selectAll("rect").data(data).enter()
      .append("rect")
      .attr("y", function(d,i) {return 400 - y(d); })
      .attr("x", function(d,i) {return x(i); })
      .attr("width", x.bandwidth())
      .attr("height", function(d,i) {return y(d); })
    	.style("stroke", "black")
      .style("fill", function(d,i) {return color(i)})

</script>
</body>

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