barchart

<!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; }
      .axis text {
        font-family: 'Open Sans', sans-serif;
        font-size: 21pt;
      }

.axis path, .axis line {
        fill: none;
        stroke: #000;
        shape-rendering: crispEdges;
      }

.x.axis text {
        font-size: 22pt;
      }
  </style>
</head>

<body>
  <script>
    var data = [
      {country: "China", population: 1376048943},
      {country: "India", population:1311050527},
      {country: "USA", population: 321773631},
      {country: "Indonesia", population: 257563815},
      {country: "Brazil", population: 207847528}
    ];
    var outerwidth = 960;
    var outerHeight =500
    var margin = {left: 90, top: 25, right: 26, bottom: 49}
    var barPadding = 0.2;
    var innerWidth  = outerWidth  - margin.left - margin.right;
    var innerHeight = outerHeight - margin.top  - margin.bottom;

// Feel free to change or delete any of the code you see in this editor!
    var svg = d3.select("body").append("svg")
      .attr("width", outerWidth)
      .attr("height", outerHeight)
    var g = svg.append("g")
        .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
    var xAxisG = g.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + innerHeight + ")");
    var yAxisG = g.append("g")
        .attr("class", "y axis");

var xScale = d3.scaleBand().range([0, innerWidth], barPadding)
    var yScale = d3.scaleLinear().range([innerHeight, 0]);
    // Use a modified SI formatter that uses "B" for Billion.
    var siFormat = d3.format("s");
    var customTickFormat = function (d){
      return siFormat(d).replace("G", "B");
    };
    
      var xAxis = d3.svg.axis().scale(xScale).orient("bottom")
      	.outerTickSize(0);
      var yAxis = d3.svg.axis().scale(yScale).orient("left")
        .ticks(5)
        .tickFormat(customTickFormat)
        .outerTickSize(0);
    
          function render(data){

xScale.domain(       data.map( function (d){ return d[xColumn]; }));
        yScale.domain([0, d3.max(data, function (d){ return d[yColumn]; })]);

xAxisG.call(xAxis);
        yAxisG.call(yAxis);

function type(d){
        d.population = +d.population;
        return d;
      }

d3.json(data, type, render);

</script>
</body>

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