D3 Examples - Number of People in major countries and regions employed in agriculture in 2007

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body {
      margin:16px;
      background-color:#030000;
    }
    .label {
      font-size: 9pt;
      font-family: 'sans-serif';
      alignment-baseline: middle;
      fill: white;
    }
    .number, .subtitle {
      font-size: 15pt;
      font-family: 'sans-serif';
      alignment-baseline: middle;
      fill: #001689;
    }
    .bar {
       fill:#002b89;
       border: solid 5px  #DEDEDE;
    }
  </style>
</head>
​
<body>
  <script>
    const width = 800;
    const height = 575;
    const margin = {
      left: 80,
      right:180,
      top: 90,
      bottom: 103
    }
    
    const svg = d3.select("body").append("svg")
        .attr("width", width)
        .attr("height", height);
    
    const g = svg.append('g')
      .attr('transform', `translate(${margin.left}, ${margin.top})`)
    
    const data = [
      {
        name: "维吾尔族",
        value: 9819792
      },
      {
        name: "壮族",
        value: 3250818
      },
      {
        name: "傣族",
        value: 1953000
      },
      {
        name: "藏族",
        value: 1726000
      },
      {
        name: "哈斯克族",
        value: 924746
      },
      {
        name: "朝鲜族",
        value: 924746
      },
      {
        name: "满族",
        value: 924746
      },
      {
        name: "其他",
        value: 924746
      }
    ];
    
    const innerWidth = width - margin.left - margin.right;
    const innerHeight = height - margin.top - margin.bottom;
    
    const xValue = d => d.value;
    const yValue = d => d.name;
    
    const xScale = d3.scaleLinear()
      .domain([0, d3.max(data, xValue)])
      .range([0, innerWidth]);
    
    const yScale = d3.scaleBand()
      .domain(data.map(yValue).reverse())
      .range([innerHeight, 0])
      .padding(0.42432);
    
    const groups = g.selectAll('g').data(data);
    const groupsEnter = groups
      .enter().append('g')
        .attr('transform', d => `translate(0, ${yScale(yValue(d))})`);
    
    groupsEnter
      .append('rect')
        .attr('class', 'bar')
        .attr('width', d => xScale(xValue(d)))
        .attr('height', yScale.bandwidth())
        .attr('fill', 'black');
    
    groupsEnter
      .append('text')
        .attr('class', 'label')
        .attr('x', -60)
        .attr('y', yScale.bandwidth() / 2)
        .text(yValue);
    
    const percentFormat = d3.format(",.1%");
    const xPercent = d => percentFormat(xValue(d) / xScale.domain()[1]);
    
    groupsEnter
      .append('text')
        .attr('class', 'number')
        .attr('x', d => xScale(xValue(d)) + 8)
        .attr('y', yScale.bandwidth() / 2)
        .text(d => `${xValue(d)} (${xPercent(d)})`);
​
  </script>
</body>
​
    