[SO 41190304] Loading data from a second CSV (ES6)

forked from altocumulus's block: [SO 41190304] Loading data from a second CSV

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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; }
  </style>
</head>
​
<body>
  <pre id="output"></pre>
  <script>
    d3.csv("file1.csv", data1 => {
      let map = d3.map(data1, d => d.name);
      d3.csv("file2.csv",
             row => (map.get(row.name).desc = row.desc,null),
             () => {d3.select("#output").text(JSON.stringify(data1, null, 2))}  
      );
    }); 
 
  </script>
</body>
​
    

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