少しずつ覚え書き。
<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>