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mohhasbias/.block

Last active February 26, 2017 00:10
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update endpoint on mousemove
Raw
.block
license: mit
height: 300
border: no
Raw
index.html
<!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outdated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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