D3 Examples - Selections: Enter example

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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 = 100;
    var height = 300;
    var data = [100, 250, 175, 200, 120];
    var colors = ['red', 'green', 'blue', 'orange', 'rebeccapurple']
    
    var svg = d3.select('svg');
    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', (d, i) => colors[i])
        .attr('stroke', '#fff');
​
  </script>
</body>
​
    