A test of hierarchical selections and parent data, features in development for D3 4.0.
xxxxxxxxxx<meta charset="utf-8"><style>td { border: solid 1px #ccc; padding: 10px;}table { margin: 10px; border-spacing: 0; border-collapse: collapse;}</style><body><script src="d3-selection.min.js"></script><script>d3.select("body") .append("table") .selectAll("tr") .data(["y" + 0, "y" + 1, "y" + 2]) .enter().append("tr") .selectAll("td") .data(["x" + 0, "x" + 1, "x" + 2]) .enter().append("td") .text(function(x, i, y, j) { return [x, y]; });</script>