xxxxxxxxxx
<head>
<meta charset="utf-8">
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
</head>
<body>
<script>
var spaceCircles = [30, 70, 110];
var svgContainer = d3.select("body").append("svg")
.attr("width", 200)
.attr("height", 200);
var circles = svgContainer.selectAll("circle")
.data(spaceCircles)
.enter()
.append("circle");
var circleAttributes = circles
.attr("cx", function (d) { return d; })
.attr("cy", function (d) { return d; })
.attr("r", 20 )
.style("fill", function(d) {
var returnColor;
if (d === 30) { returnColor = "green";
} else if (d === 70) { returnColor = "purple";
} else if (d === 110) { returnColor = "red"; }
return returnColor;
});
</script>
</body>
https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js