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Fil/.block

Last active December 7, 2016 19:10
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.last node [UNLISTED]
Raw
.block
license: mit
Raw
index.html
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<script src="https://d3js.org/d3.v4.min.js"></script>
<style>
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
</style>
</head>
<body>
<script>
// Feel free to change or delete any of the code you see in this editor!
var svg = d3.select("body").append("svg")
.attr("width", 960)
.attr("height", 500)
svg.selectAll('circle')
.data(d3.range(20 + 20 * Math.random()))
.enter()
.append('circle')
.attr('r', 5)
.attr('cx', function(d){ return 10 + d * 15; })
.attr('cy', 10)
.attr('fill', '#aaa');
// Get the first node of a list with .node()
var first = svg.selectAll('circle')
.node();
d3.select(first).attr('fill','red');
// Select the last node of a list with :last-child
var last = svg.select('circle:last-child')
.node();
d3.select(last).attr('fill','green');
// Filter the last (or other) node of a list
// (need to know the size)
var all = svg.selectAll('circle');
var last2 = all
.filter(function(d,i){
return i == all.size() - 1 - 3;
})
.node();
d3.select(last2).attr('fill','pink');
</script>
</body>
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