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romsson/.block

Last active September 18, 2019 07:19
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D3 bar chart with data-binding
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>
rect {
fill: white;
stroke: black;
stroke-width: 1;
}
</style>
</head>
<body>
<script>
var svg = d3.select("body").append("svg")
.attr("width", 960)
.attr("height", 500);
var data = [22, 32, 21, 23, 10, 22, 11, 19, 30, 50, 19, 30, 50, 19, 30, 87, 12,13, 14, 15, 20, 100, ];
var y = d3.scaleLinear()
.domain([0, d3.max(data)])
.range([0, +d3.select("svg").attr("height")/3]);
// ordinal
var x = d3.scaleBand()
.domain(data)
.range([0, +d3.select("svg").attr("width")]);
var s = svg.selectAll("rect").data(data);
s.enter()
.append("rect")
svg.selectAll("rect")
.attr("width", function(d, i) { return x.bandwidth(); })
.attr("height", function(d, i) { return y(d); })
.attr("x", function(d, i) { return x(d); })
.attr("y", function(d) { return 200 - y(d); })
.on("mouseenter", function(d) {
d3.select(this).style("fill", "red")
})
.on("mouseleave", function(d) {
if(d.__clicked !== true) {
d3.select(this).style("fill", "white")
}
})
.on("click", function(d) {
d3.select(this).style("fill", "green")
d.__clicked = true;
})
</script>
</body>
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