D3 Examples - Rectangles using data Color II

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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>
  <script>
    
    var jsonRectangles = [
    { "x_axis": 10, "y_axis": 10, "height": 20, "width":30, "color" : "rgb(0, 254, 0)", "name" : "Green" },
    { "x_axis": 10, "y_axis": 40, "height": 30, "width":60, "color" : "rgb(255, 255, 1)", "name" : "Yellow" },
    { "x_axis": 5, "y_axis": 79, "height": 40, "width":40, "color" : "#01FFFD", "name" : "Bright Blue" },
    { "x_axis": 195, "y_axis": 3, "height": 30, "width":20, "color" : "#FE9900", "name" : "Orange" },
    { "x_axis": 63, "y_axis": 129, "height": 40, "width":40, "color" : "#329866", "name" : "Weird Green" },
    { "x_axis": 195, "y_axis": 46, "height": 30, "width":20, "color" : "#FF7C82", "name" : "Peachy Pink" },
    { "x_axis": 195, "y_axis": 85, "height": 30, "width":20, "color" : "#00CC67", "name" : "Medium Green" }
    ];
    
    
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500);
​
// Use of 'g' to group - only one data enter with group
// Note the object is in JSON format - attributes and style should use "", ""  
// js uses '' : ''    
    
    var mainGroup = svg.append('g');
​
    var rectGroup = mainGroup.selectAll('g')
                .data(jsonRectangles)
                .enter()
                .append('g');
      
        rectGroup.append('rect')
                  .attr("x", function (d) { return d.x_axis; })
                  .attr("y", function (d) { return d.y_axis; })
                  .attr("height", function (d) { return d.height; })
                  .attr("width", function (d) { return d.width; })
                  .style("fill", function(d) { return d.color; })
                  .style("stroke", "black")
                  .style("stroke-width", 1);
    
            rectGroup.append('text')
                             .text(function (d) { return d.name; })
                             .attr("x", function (d) { return d.x_axis + d.width + 5; })
                   .attr("y", function (d) { return d.y_axis + d.height; })
                             .attr("font-size", 18)
                               .attr("font-family", "monospace");
   
/*    
        barGroup.append('text')
                .text(function(d) { return d; })
                .style('text-anchor', 'start')
                .attr({
                    dx: 10,
                    dy: -10,
                    transform: 'rotate(90)',
                    fill: 'white'
                });
*/    
    
  </script>
</body>
​
    