少しずつ覚え書き。
[html]
<html>
<head>
<title>D3.js</title>
</head>
<body>
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script type="text/javascript">
var svg = d3.select("body")
.append("svg")
.attr({width:"300px", height:"200px"})
.style("background-color","lightgray");
</script>
</body>
</html>
[/html]