d3 | table data from matrix

Aim

Create and populate a html table form an array within an array (matrix)

Info and sources

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>Making a table from matrix</title> 
    <script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script>

</head>

<body>

var matrix = [
      [ 0,  1,  2,  3],
      [ 4,  5,  6,  7],
      [ 8,  9, 10, 11],
      [12, 13, 14, 15],
      [16, 17, 18, 19, 20],
      [21, 22, 23, 24, 25, 26, 27, 28, 29, 30],
    ];

// selecting the body
    var body = d3.select("body");

// append a table element to the body
    var table = body.append("table");

// append entering rows to the table via data-join (Since selectAll is called on the selected table element, it establishes a new parent node of table instead of the default html)
    var tr = table.selectAll("tr")
            .data(matrix)
            .enter()
            .append("tr");

// append entering cells to each row
    var td = tr.selectAll("td")
            .data(function(d) { return d; })
            .enter()
            .append("td");

// add content from the dataset
    var content = td.text(function(d) { return d; });

// manipulate colour of specific cells and rows: j is row ,and i is column
    td.style("color", function(d, i, j) { return (j<2 && i<2 ) ? null : "red"; });

</script>

</body>
</html>

Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js