Created
December 7, 2012 17:51
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Contexts
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Context</title> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <style type="text/css"> | |
| </style> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| var data = [ | |
| { | |
| key: 'likes', | |
| values: [{ key: 'blue-frog', value: 1 }, { key: 'goodbye', value: 2 }] | |
| }, | |
| { | |
| key: 'dislikes', | |
| values: [{ key: 'blue-frog', value: 3 }, { key: 'goodbye', value: 4 }] | |
| }]; | |
| var chartdivs = d3.select("body").selectAll("div.chart") | |
| .data([data]) | |
| .enter().append("div") | |
| .attr("class", "chart") | |
| .style("width", "500px") | |
| .style("height", "400px"); | |
| chartdivs.call(chart); | |
| function chart(selection) { | |
| selection.each(function(d,i) { | |
| var chartdiv = d3.select(this); | |
| var bar = chartdiv.selectAll(".bar") | |
| .data(d) | |
| .enter().append("div") | |
| .attr("class", "bar") | |
| .style("width", "100px") | |
| .style("height", "100px") | |
| .style("background-color", "red"); | |
| var rect = bar.selectAll(".rect") | |
| .data(function(d) { return d.values; }) | |
| .enter().append("div") | |
| .attr("class", "rect") | |
| .text(function(d) { return d.key; }) | |
| .style("background-color", "steelblue"); | |
| bar.each(function(dbar) { | |
| var bardiv = d3.select(this); | |
| bardiv.selectAll(".rect") | |
| .on("click", function(drect) { | |
| d3.select(this).call(onclickfunc, bardiv); | |
| }); | |
| }); | |
| function onclickfunc(rect, bar) { // has access to chart, bar, and rect | |
| chartdiv.style("background-color", bar.datum().key === 'likes' ? "green" : "grey"); | |
| console.log(rect.datum().key); // will print either 'blue-frog' or 'goodbye' | |
| } | |
| }); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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