This example shows how to use D3 and selection subsections to process a nested json data structure.
source: gist.github.com/gists/1183998
D3 References:
Created
August 31, 2011 16:38
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D3 Example: Processing a nested json data structure with subsections
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> | |
| <title>D3: Subselection Example</title> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js"></script> | |
| <style type="text/css"> | |
| body { | |
| font: 13px sans-serif; | |
| } | |
| ul { | |
| list-style: none; | |
| font-weight: bold; | |
| } | |
| li { | |
| margin: 0.2em 0.0em; | |
| padding: 0.5em 1.0em; | |
| font-weight: normal; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| var questions = [ | |
| { "prompt": "Why is the sky blue?", | |
| "responses": [ | |
| "Because the color blue was on sale at Wallmart", | |
| "Because blue is the prettiest color", | |
| "Because the air molecules difract blue light more than any other color" | |
| ] | |
| }, | |
| { "prompt": "Why are leaves usually green?", | |
| "responses": [ | |
| "So green caterpillars can hide better.", | |
| "Because leaves can more easily make energy with green light", | |
| "Because leaves absorb red and blue light so it's green that is reflected" | |
| ] | |
| } | |
| ]; | |
| d3.select("body").selectAll("ul") | |
| .data(questions) | |
| .enter().append("ul") | |
| .text(function(d) { return d.prompt }) | |
| .selectAll("li") | |
| .data(function(d) { return d.responses; }) | |
| .enter().append("li") | |
| .text(function(d) { return d }) | |
| .style("background-color", function(d, i) { return i % 2 ? "#eee" : "#ddd"; }); | |
| </script> | |
| </body> | |
| </html> |
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