var dataset = [ 5, 10, 15, 20, 25 ];
d3.select("body").selectAll("div")
.data(dataset)
.enter()
.append("div")
.style("display","inline-block")
.style("background-color", "#ffff00")
.style("width","20pt")
.style("height", function(d) {
return d*10 + "px";
});