bar chart renewable energy

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Use of renewable energy</title>
		<script type="text/javascript" src="https://d3js.org/d3.v3.js">></script>
		<style type="text/css">		
			body {
				background-color: #561704;
				font-family: arial, sans-serif;
			}
			h1{
				color:#b9bc79;
			}
			h3{
				color:#fff;
			}
			svg {
				background-color: #561704;
				margin: 20px;
				padding: 10px;
				font-size: 11px;
			}
			rect {
				fill:#fff;
			}
		</style>
	</head>
	<body>
		<h1>Use of renewable energy in various countries for 2012</h1>
		<h3>percentage of total energy generation</h3>

var svg = d3.select("body")
		.append("svg")
		.attr("width", w)
		.attr("height", h);

//load data
	d3.csv("renewable-energy-perc-of-total-energy-generation.csv", function(data){

data.sort(function(a,b){
//+a and +b :  probably some values are written as text instead of numbers
return d3.descending(+a.y2012, +b.y2012)
		});
		dataset=data;
//country
svg.selectAll("text")
.data(dataset)
.enter()
.append("text")
.text(function(d){
	return d.Country;
})
.attr("x", 140)
.attr("y", function(d,i){
	return i*15+10;
})
.attr("fill","#b9bc79")
.attr("text-anchor", "end")
;

//alle rectangles in var
var rects= svg.selectAll("rect")
	.data(dataset)
	.enter()
	.append("rect");

rects.attr("x", 150)
	.attr("y", function(d,i){
		return i*15;
	})
	.attr("width", function(d){
		return d.y2012*4;
	})
	.attr("height", 12)
	.append("title")
	.text(function(d){
	return "energy generation " + d.Country + " 2012: " + d.y2012 +"%";
	})

});
</script>

</body>
</html>

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

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