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D3 drag behavior example
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| <!DOCTYPE html> | |
| <meta charset="utf-8" /> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"/> | |
| <title>D3 drag behavior example</title> | |
| <style> | |
| html, body, svg { | |
| width: 100%; | |
| height: 100%; | |
| padding: 0px; | |
| margin: 0px; | |
| } | |
| </style> | |
| <body> | |
| <button id="reset">reset</button> | |
| <svg></svg> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> | |
| <script> | |
| var svg = d3.select('svg'); | |
| var dataSet = d3.range(100); | |
| var wRange = 960; | |
| var hRange = 500; | |
| var circle = svg.selectAll("circle") | |
| .data(dataSet) | |
| .enter() | |
| .append('circle') | |
| .attr({ | |
| 'width':100, | |
| 'height':30, | |
| 'fill': 'blue', | |
| 'fill-opacity':0.5, | |
| 'r': function(){ return ( Math.random() * 15 ) + 4 }, | |
| 'cx':function(){ return Math.floor(Math.random() * wRange )}, | |
| 'cy':function(){ return Math.floor(Math.random() * hRange )} | |
| }); | |
| var drag = d3.behavior.drag() | |
| .on("drag", function(){ | |
| circle | |
| .transition() | |
| .delay(function(d,i){ return i * 100 }) | |
| .attr({ | |
| 'cx':d3.event.x, | |
| 'cy':d3.event.y | |
| }) | |
| }); | |
| circle.call(drag); | |
| d3.select("#reset").on('click', function(){ | |
| circle.transition() | |
| .attr({ | |
| 'cx':function(){ return Math.floor(Math.random() * wRange )}, | |
| 'cy':function(){ return Math.floor(Math.random() * hRange )} | |
| }) | |
| }) | |
| </script> |
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