Created
December 31, 2011 12:22
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Fast highlighting in D3
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| <!DOCTYPE html> | |
| <head> | |
| <title>Fast highlighting in D3</title> | |
| <style> | |
| circle { fill: #fff; stroke: #000; } | |
| .highlight { fill: #fc0; } | |
| </style> | |
| <script src="http://d3js.org/d3.v2.min.js"></script> | |
| </head> | |
| <body> | |
| <script> | |
| var w = 500, | |
| active = null; | |
| d3.select("body").append("svg") | |
| .attr("width", w) | |
| .attr("height", w) | |
| .selectAll("circle") | |
| .data(d3.range(1000)) | |
| .enter().append("circle") | |
| .attr("r", 10) | |
| .attr("cx", x) | |
| .attr("cy", x) | |
| .on("click", function() { | |
| if (active) active.classed("highlight", false); | |
| active = d3.select(this.parentNode.appendChild(this)) | |
| .classed("highlight", true); | |
| }); | |
| function x() { | |
| return Math.random() * w; | |
| } | |
| </script> | |
| </body> |
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