connecttech2016/bar-chart-labels.html at master · cmorrow/connecttech2016 · GitHub

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<!doctype html>
<html>

	<head>
	    <meta charset="utf-8">
	    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
	    <title>Bar Chart v2 - Labels</title>
	    <link rel="stylesheet" type="text/css" href="css/samples.css">

	    <style type="text/css" media="screen">
	    	div.bar {
					background-color: orange;
					padding: 5px 10px;
					margin-bottom: 5px;
					color: #000;
					font-size: 24px;
					font-weight: bold;
				}

				div:after {
					content: ' ';
					display:table;
					clear: both;
				}

				div.bar .value {
					font-family: Arial;
					float:right;
					margin-right: 5px;
				}

	    </style>
	</head>
	<body class="sample">

		<div class="container">
			<h1>Bar Chart v2 - Labels</h1>
			<div id="barChartDiv"></div>
		</div>
		<!-- list will be inserted/appended here -->

	</body>
	<script src="js/lib/d3.v4.min.js"></script>
	<script src="js/get-data.js"></script>
	<script>
		(function(){
		  /* global d3 */
		  var max;
		  var data = getSalesData();

		  // set the scales
		  var xScale = d3.scaleLinear().range([0,100]);

		  function render() {

		    var container = d3.select("#barChartDiv");

		    // format the data
	      data.forEach(function(d) {
	        d.sales = +d.sales;
	      });

	      max = d3.max(data, function(d) { return d.sales; });

	      // set scales
	      xScale.domain([0, d3.max(data, function(d) { return d.sales; })]);

	      // append the rectangles for the bar chart
	      var bars = container.selectAll("div")
	          .data(data)
	        .enter().append("div")
	          .attr("class", "bar")
	          .style("width", function(d) {
	            return getPercentage(d.sales);
	          });

	      bars.append('span')
	      .attr('class', 'value')
	      .text(function(d){
	        return d.sales;
	      });
		  }

		  function getPercentage(d){
		    return ((d/max) * 100) + '%'; // magic?
		  }

		  render();
		})();
	</script>
</html>