D3 Examples - 3rd block

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<!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; }
    svg {
      width: 100%;
      height: 100%;
    }
  </style>
</head>
​
<body>
  <svg></svg>
  <script>
    var rectWidth = 50;
    var height = 300;
    var data = [10, 250, 175, 200, 120, 60, 220, 45]
    
    var svg = d3.select('svg');
    
    var enter = svg.selectAll('rect')
        .data(data)
        .enter()
        .append('rect')
        .attr('x', (d, i) => i * rectWidth)
        .attr('y',d => height - d)
        .attr('width', rectWidth)
        .attr('height', d => d)
        .attr('fill', function(d) {
        if (d < 100) return 'red';
        if (d > 200) return 'green';
        return 'dodgerblue'
      })
        .attr('stroke', '#fff')
//  console.log(enter)
  
  
  </script>
</body>
​
    