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133 lines (123 loc) · 3.25 KB
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<!DOCTYPE html>
<!-- https://github.com/alignedleft/d3-book/blob/master/chapter_10/14_div_tooltip.html -->
<html lang="en">
<head>
<meta charset="utf-8">
<title>D3: An HTML div tooltip</title>
<script src="https://d3js.org/d3.v5.js"></script>
<style type="text/css">
rect:hover {
fill: orange;
}
#tooltip {
position: absolute;
width: 200px;
height: auto;
padding: 10px;
background-color: white;
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
border-radius: 10px;
-webkit-box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
pointer-events: none;
}
#tooltip.hidden {
display: none;
}
#tooltip p {
margin: 0;
font-family: sans-serif;
font-size: 16px;
line-height: 20px;
}
</style>
</head>
<body>
<div id="tooltip" class="hidden">
<p><strong>Important Label Heading</strong></p>
<p><span id="value">100</span>%</p>
</div>
<script type="text/javascript">
//Width and height
var w = 600;
var h = 250;
var dataset = [ 5, 10, 13, 19, 21, 25, 22, 18, 15, 13,
11, 12, 15, 20, 18, 17, 16, 18, 23, 25 ];
var xScale = d3.scaleBand()
.domain(d3.range(dataset.length))
.rangeRound([0, w])
.paddingInner(0.05);
var yScale = d3.scaleLinear()
.domain([0, d3.max(dataset)])
.range([0, h]);
//Create SVG element
var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);
//Create bars
svg.selectAll("rect")
.data(dataset)
.enter()
.append("rect")
.attr("x", function(d, i) {
return xScale(i);
})
.attr("y", function(d) {
return h - yScale(d);
})
.attr("width", xScale.bandwidth())
.attr("height", function(d) {
return yScale(d);
})
.attr("fill", function(d) {
return "rgb(0, 0, " + Math.round(d * 10) + ")";
})
.on("mouseover", function(d) {
//Get this bar's x/y values, then augment for the tooltip
var xPosition = parseFloat(d3.select(this).attr("x")) + xScale.bandwidth() / 2;
var yPosition = parseFloat(d3.select(this).attr("y")) / 2 + h / 2;
//Update the tooltip position and value
d3.select("#tooltip")
.style("left", xPosition + "px")
.style("top", yPosition + "px")
.select("#value")
.text(d);
//Show the tooltip
d3.select("#tooltip").classed("hidden", false);
})
.on("mouseout", function() {
//Hide the tooltip
d3.select("#tooltip").classed("hidden", true);
})
.on("click", function() {
sortBars();
});
//Define sort order flag
var sortOrder = false;
//Define sort function
var sortBars = function() {
//Flip value of sortOrder
sortOrder = !sortOrder;
svg.selectAll("rect")
.sort(function(a, b) {
if (sortOrder) {
return d3.ascending(a, b);
} else {
return d3.descending(a, b);
}
})
.transition()
.delay(function(d, i) {
return i * 50;
})
.duration(1000)
.attr("x", function(d, i) {
return xScale(i);
});
};
</script>
</body>
</html>