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In D3.js it seems that objects that are drawn before other objects that then obscure them become invisible to the mouseover listener. Is there a workaround to this?
See this working example.
<!DOCTYPE html>
<meta charset="utf-8">
<head>
<script type="text/javascript" src="scripts/d3.v3.js"></script>
</head>
<body>
<div id="viz"></div>
<script type="text/javascript">
d3.select("body").style("background-color", "black");
var sampleSVG = d3.select("#viz")
.append("svg")
.attr("width", 400)
.attr("height", 200);
sampleSVG.append("circle")
.style("fill", "grey")
.style("stroke-width", 2)
.attr("r", 60)
.attr("cx", 150)
.attr("cy", 100)
.on("mouseover", function(){d3.select(this).style("fill", "red");})
.on("mouseout", function(){d3.select(this).style("fill", "grey");});
sampleSVG.append("circle")
.style("stroke", "yellow")
.style("opacity", 0.5)
.style("stroke-width", 2)
.attr("r", 100)
.attr("cx", 250)
.attr("cy", 100)
</script>
</body>
</html>
204
The solution is to add ".style("pointer-events", "none");" for the last circle:
sampleSVG.append("circle")
.style("stroke", "yellow")
.style("opacity", 0.5)
.style("stroke-width", 2)
.attr("r", 100)
.attr("cx", 250)
.attr("cy", 100)
.style("pointer-events", "none");
Here is a working example http://tributary.io/inlet/5215694
Note: If the larger circle has its fill attribute set to 'none', then the example also works as expected without needing the "pointer-events" set to none.
168
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