### Example07 - Random test
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<html>
<head>
<meta charset="utf-8">
<title>Mozfest example</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
<style>
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
.existing {color: blue;}
.new {color: green;}
</style>
</head>
<body>
<h1>Mozfest: D3 intro - example07</h1>
<!--<p> previous paragraph</p>-->
<script type="text/javascript">
//Width and height
var w = 800;
var h = 100;
var barPadding = 1;
var num_items = 100;
var dataset = [];
for (var i = 0; i < num_items; i++) {//Loop num_items times
var newNumber = Math.floor(Math.random() * 30);//New random integer (0-29)
dataset.push(newNumber);//Add new number to array
}
var l = dataset.length;
//Create SVG element
var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);
svg.selectAll("rect")
.data(dataset)
.enter()
.append("rect")
.attr("x", function(d,i) {return i * (w/l);})
.attr("y", function(d) {return h-d;})
.attr("width", function(d) {return w/l-barPadding;})
.attr("height", function(d,i) {return d+"px";});
</script>
</body>
</html>
https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js