FrontendMasters D3 Challenge 1

<!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>
		// Set constants
    const city = 'San Francisco';
    const width = 800;
    const height = 300;
  	
    // Grab data set and work on data
		d3.tsv('data.tsv', (err, data) => {
      // Clean Data
      data.forEach(d => {
        d.date = d3.timeParse('%Y%m%d')(d.date);
        d.date = new Date(d.date); //x
        ++d[city]; //y
      });
      
      var svg = d3.select('svg')
      						.attr('width', width)
                  .attr('height', height)
      						.style('border', '1px solid #000');
      
      svg.selectAll('rect')
      	.data(data)
      	.enter()
      	.append('rect')
      	.attr('x', (d, i) => i)
      	.attr('y', (d) => height - d[city])
      	.attr('width', 5)
      	.attr('height', d => d[city])
      	.attr('fill', 'blue')      	
    });
  </script>
</body>

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