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update endpoint on mousemove
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| license: mit | |
| height: 300 | |
| border: no |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]--> | |
| <!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8"> <![endif]--> | |
| <!--[if IE 8]> <html class="no-js lt-ie9"> <![endif]--> | |
| <!--[if gt IE 8]><!--> <html class="no-js"> <!--<![endif]--> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> | |
| <title>Update End Point on Mousemove</title> | |
| <meta name="description" content=""> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| </head> | |
| <body> | |
| <!--[if lt IE 7]> | |
| <p class="browsehappy">You are using an <strong>outdated</strong> browser. Please <a href="#">upgrade your browser</a> to improve your experience.</p> | |
| <![endif]--> | |
| <div id="d3-drawing-area"></div> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/d3/4.6.0/d3.min.js"></script> | |
| <script> | |
| var svg = d3.select('#d3-drawing-area').append('svg') | |
| .attr('width', 300) | |
| .attr('height', 300) | |
| .style('background', 'lightblue'); | |
| var line = svg.append('line') | |
| .attr('x1', 100) | |
| .attr('y1', 100) | |
| .attr('x2', 200) | |
| .attr('y2', 200) | |
| .style('stroke', 'blue') | |
| .style('stroke-width', 2); | |
| // update endpoint on mousemove over svg | |
| svg.on('mousemove', function() { | |
| // get mouse position relative to "this" svg | |
| var mousePosition = d3.mouse(this); | |
| // use it to update endpoint (x2, y2) | |
| line | |
| .attr('x2', mousePosition[0]) | |
| .attr('y2', mousePosition[1]); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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