Adding a grid to your chart.
Fork of https://gist.github.com/llad/3766585
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<meta charset="utf-8">
<html>
<head>
<link href="style.css" rel="stylesheet">
<script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script src="column-chart.js"></script>
</head>
<body>
<div id="example"></div>
</body>
<script>
var data = [["A",0.012], ["B",-0.025], ["C",0.008], ["D",0.023], ["E",-0.009], ["F", 0.005]];
d3.select("#example")
.datum(data)
.call(columnChart()
.width(960)
.height(500)
.x(function(d, i) { return d[0]; })
.y(function(d, i) { return d[1]; }));
</script>
</html>
Modified http://d3js.org/d3.v3.min.js to a secure url
https://d3js.org/d3.v3.min.js