d3js: Color SVG circle based on select box value.
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December 24, 2015 14:19
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d3js: Color SVG circle based on select box value.
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| <!DOCTYPE html> | |
| <meta charset='utf-8'> | |
| <html> | |
| <head> | |
| <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <link rel='stylesheet' href='style.css'> | |
| </head> | |
| <body> | |
| <script type='text/javascript' src='script.js'></script> | |
| </body> | |
| </html> |
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| var h = 100 | |
| var w = 100 | |
| var colors = ['red','blue','green','yellow','orange','purple','black'] | |
| var body = d3.select('body') | |
| body.append('select') | |
| .on('change',function () { | |
| var colorsChoice = d3.select('select').property('value') | |
| d3.select('circle') | |
| .transition() | |
| .duration(1000) | |
| .attr('fill',colorsChoice) | |
| }) | |
| .selectAll('option') | |
| .data(colors) | |
| .enter() | |
| .append('option') | |
| .attr('value',function (d) { return d }) | |
| .text(function (d) { return d}) | |
| var svg = d3.select('body').append('svg') | |
| .attr('width',w) | |
| .attr('height',h) | |
| var circle = svg.append('circle') | |
| .attr('r',40) | |
| .attr('cx',w/2) | |
| .attr('cy',h/2) | |
| .attr('fill','red') | |
| .attr('stroke','black') |
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