d3.tsv usage

<!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>
  <script>
// d3.tsv(url/"fileName.tsv", callback) 
d3.tsv("data.tsv", function(error, data) {
    if (error) throw error;

console.log("example1: ", data, data[0].Hello, data[0].World);
});

console.log("tsv(url, callback) is an alias tsv(url).get(callback)");
d3.tsv("data.tsv").get(function(error, data) {
    if (error) throw error;
    console.log("example2: ", data, data[0].Hello, data[0].World);
});
    
      
console.log("tsv(url, row, callback) observes the specified row conversion function");
  d3.tsv("data.tsv", function(d) { d.Hello = -d.Hello; d.World = d.World + ".d3"; return d; }, function(error, data) {
    if (error) throw error;
    console.log("example3", data, data[1].Hello, data[1].World);
});     
    
    
console.log("tsv(url, row, callback) is an alias for tsv(url).row(row).get(callback)");
  d3.tsv("data.tsv").row(function(d) { d.Hello = -d.Hello; return d; }).get(function(error, data) {
    if (error) throw error;
    console.log("example4", data);
});

console.log("tsv(url).mimeType(type).get(callback) observes the specified mime type");// function(test) {
  d3.tsv("data.tsv").mimeType("text/plain").get(function(error, data) {
    if (error) throw error;
    console.log("example5", data);
});      
    
  </script>
</body>

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