479 lines
13 KiB
Markdown
479 lines
13 KiB
Markdown
---
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id: 5d8a4cfbe6b6180ed9a1ca6c
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title: Part 140
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challengeType: 0
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dashedName: part-140
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---
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# --description--
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There's a problem, each time you hover a label it adds all the elements to the container again. If you empty the container at the top of the function, it will redraw them where they need to be.
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Go back to the top of the function and use `d3.select` to select the `.dashboard` element and chain the `html` function to it with an empty string as it parameter. Empty means no spaces.
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# --hints--
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test-text
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```js
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const script = $('.dashboard').siblings('script')[1].innerHTML;
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assert(/d3\.select\(('|"|`)\.dashboard\1\)\.html\(('|"|`)\2\)/g.test(script));
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```
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# --seed--
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## --before-user-code--
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```html
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<!DOCTYPE html>
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<html>
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<head>
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<title>D3 Dashboard</title>
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<style>
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body {
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background-color: #ccc;
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padding: 100px 10px;
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}
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.dashboard {
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width: 980px;
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height: 500px;
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background-color: white;
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box-shadow: 5px 5px 5px 5px #888;
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margin: auto;
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display: flex;
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align-items: center;
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}
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</style>
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</head>
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<body>
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<div class="dashboard"></div>
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</body>
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</html>
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```
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## --seed-contents--
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```html
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<script>
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const data = [
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{ year: 2012, followers: { twitter: 2594, tumblr: 401, instagram: 83 }},
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{ year: 2013, followers: { twitter: 3049, tumblr: 440, instagram: 192 }},
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{ year: 2014, followers: { twitter: 3511, tumblr: 415, instagram: 511 }},
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{ year: 2015, followers: { twitter: 3619, tumblr: 492, instagram: 1014 }},
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{ year: 2016, followers: { twitter: 4046, tumblr: 543, instagram: 2066 }},
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{ year: 2017, followers: { twitter: 3991, tumblr: 701, instagram: 3032 }},
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{ year: 2018, followers: { twitter: 3512, tumblr: 1522, instagram: 4512 }},
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{ year: 2019, followers: { twitter: 3274, tumblr: 1989, instagram: 4715 }},
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{ year: 2020, followers: { twitter: 2845, tumblr: 2040, instagram: 4801 }}
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];
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</script>
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<script>
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function drawDashboard(year) {
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const index = data.findIndex(d => d.year === year);
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const svgMargin = 70,
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svgWidth = 700,
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svgHeight = 500,
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twitterColor = '#7cd9d1',
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tumblrColor = '#f6dd71',
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instagramColor = '#fd9b98';
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const lineGraph = d3.select('.dashboard')
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.append('svg')
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.attr('width', svgWidth)
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.attr('height', svgHeight);
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const yScale = d3.scaleLinear()
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.domain([0, 5000])
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.range([svgHeight - svgMargin, svgMargin]);
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const xScale = d3.scaleLinear()
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.domain([2012, 2020])
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.range([svgMargin, svgWidth - svgMargin]);
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const yAxis = d3.axisLeft(yScale)
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.ticks(6, '~s');
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const xAxis = d3.axisBottom(xScale)
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.tickFormat(d3.format(''))
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.tickPadding(10);
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lineGraph.append('g')
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.call(yAxis)
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.attr('transform', `translate(${svgMargin}, 0)`)
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.style('font', '10px verdana');
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lineGraph.append('g')
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.call(xAxis)
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.attr('transform', `translate(0, ${svgHeight - svgMargin})`)
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.selectAll('text')
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.style('transform', 'translate(-12px, 0) rotate(-50deg)')
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.style('text-anchor', 'end')
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.style('cursor', 'pointer')
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.style('font', '10px verdana')
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.on('mouseover', d => drawDashboard(d));
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const twitterLine = d3.line()
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.x(d => xScale(d.year))
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.y(d => yScale(d.followers.twitter));
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lineGraph.append('path')
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.attr('d', twitterLine(data))
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.attr('stroke', twitterColor)
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.attr('stroke-width', 3)
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.attr('fill', 'transparent');
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const tumblrLine = d3.line()
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.x(d => xScale(d.year))
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.y(d => yScale(d.followers.tumblr));
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lineGraph.append('path')
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.attr('d', tumblrLine(data))
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.attr('stroke', tumblrColor)
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.attr('stroke-width', 3)
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.attr('fill', 'transparent');
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const instagramLine = d3.line()
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.x(d => xScale(d.year))
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.y(d => yScale(d.followers.instagram));
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lineGraph.append('path')
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.attr('d', instagramLine(data))
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.attr('stroke', instagramColor)
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.attr('stroke-width', 3)
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.attr('fill', 'transparent');
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lineGraph.selectAll('twitter-circles')
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.data(data)
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.enter()
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.append('circle')
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.attr('cx', d => xScale(d.year))
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.attr('cy', d => yScale(d.followers.twitter))
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.attr('r', 6)
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.attr('fill', 'white')
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.attr('stroke', twitterColor)
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.style('cursor', 'pointer')
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lineGraph.selectAll('tumblr-circles')
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.data(data)
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.enter()
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.append('circle')
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.attr('cx', d => xScale(d.year))
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.attr('cy', d => yScale(d.followers.tumblr))
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.attr('r', 6)
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.attr('fill', 'white')
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.attr('stroke', tumblrColor)
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.style('cursor', 'pointer')
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lineGraph.selectAll('instagram-circles')
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.data(data)
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.enter()
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.append('circle')
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.attr('cx', d => xScale(d.year))
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.attr('cy', d => yScale(d.followers.instagram))
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.attr('r', 6)
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.attr('fill', 'white')
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.attr('stroke', instagramColor)
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.style('cursor', 'pointer')
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const rightDashboard = d3.select('.dashboard')
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.append('div');
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const pieGraph = rightDashboard.append('svg')
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.attr('width', 200)
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.attr('height', 200)
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.style('position', 'relative')
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.style('left', '20px');
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const pieArc = d3.arc()
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.outerRadius(100)
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.innerRadius(0);
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const pieColors = d3.scaleOrdinal()
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.domain(data[index].followers)
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.range([twitterColor, tumblrColor, instagramColor]);
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const pie = d3.pie()
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.value(d => d.value);
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const pieGraphData = pieGraph.selectAll('pieSlices')
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.data(pie(d3.entries(data[index].followers)))
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.enter()
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.append('g')
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.attr('transform', 'translate(100, 100)');
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pieGraphData.append('path')
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.attr('d', pieArc)
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.attr('fill', d => pieColors(d.data.key))
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.attr('stroke', 'white')
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.attr('stroke-width', 2);
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pieGraphData.append('text')
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.text(d => {
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const values = d3.values(data[index].followers);
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const sum = d3.sum(values);
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const percent = d.data.value/sum;
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return `${ Math.round(percent*100) }%`;
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})
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.attr('transform', d => `translate(${pieArc.centroid(d)})`)
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.style('text-anchor', 'middle')
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.style('font', '10px verdana');
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const legend = rightDashboard.append('table')
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.attr('width', 200)
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.attr('height', 120)
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.style('font', '12px verdana')
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.style('position', 'relative')
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.style('top', '30px');
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const legendTitle = legend.append('thead')
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.append('tr')
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.append('th')
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.text('2020 followers')
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.attr('colspan', 3)
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.style('position', 'relative')
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.style('left', '20px');
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const legendRows = legend.append('tbody')
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.selectAll('tr')
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.data(d3.entries(data[index].followers))
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.enter()
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.append('tr');
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legendRows.append('td')
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.text(d => d.key)
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.attr('align', 'right');
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legendRows.append('td')
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.attr('align', 'center')
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.append('div')
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.style('width', '16px')
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.style('height', '16px')
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.style('background-color', d => pieColors(d.key))
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legendRows.append('td')
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.text(d => d.value)
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.attr('align', 'left');
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}
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drawDashboard(2020);
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</script>
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```
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# --solutions--
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```html
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<script>
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const data = [
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{ year: 2012, followers: { twitter: 2594, tumblr: 401, instagram: 83 }},
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{ year: 2013, followers: { twitter: 3049, tumblr: 440, instagram: 192 }},
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{ year: 2014, followers: { twitter: 3511, tumblr: 415, instagram: 511 }},
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{ year: 2015, followers: { twitter: 3619, tumblr: 492, instagram: 1014 }},
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{ year: 2016, followers: { twitter: 4046, tumblr: 543, instagram: 2066 }},
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{ year: 2017, followers: { twitter: 3991, tumblr: 701, instagram: 3032 }},
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{ year: 2018, followers: { twitter: 3512, tumblr: 1522, instagram: 4512 }},
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{ year: 2019, followers: { twitter: 3274, tumblr: 1989, instagram: 4715 }},
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{ year: 2020, followers: { twitter: 2845, tumblr: 2040, instagram: 4801 }}
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];
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</script>
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<script>
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function drawDashboard(year) {
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d3.select('.dashboard').html('');
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const index = data.findIndex(d => d.year === year);
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const svgMargin = 70,
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svgWidth = 700,
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svgHeight = 500,
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twitterColor = '#7cd9d1',
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tumblrColor = '#f6dd71',
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instagramColor = '#fd9b98';
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const lineGraph = d3.select('.dashboard')
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.append('svg')
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.attr('width', svgWidth)
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.attr('height', svgHeight);
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const yScale = d3.scaleLinear()
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.domain([0, 5000])
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.range([svgHeight - svgMargin, svgMargin]);
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const xScale = d3.scaleLinear()
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.domain([2012, 2020])
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.range([svgMargin, svgWidth - svgMargin]);
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const yAxis = d3.axisLeft(yScale)
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.ticks(6, '~s');
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const xAxis = d3.axisBottom(xScale)
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.tickFormat(d3.format(''))
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.tickPadding(10);
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lineGraph.append('g')
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.call(yAxis)
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.attr('transform', `translate(${svgMargin}, 0)`)
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.style('font', '10px verdana');
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lineGraph.append('g')
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.call(xAxis)
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.attr('transform', `translate(0, ${svgHeight - svgMargin})`)
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.selectAll('text')
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.style('transform', 'translate(-12px, 0) rotate(-50deg)')
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.style('text-anchor', 'end')
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.style('cursor', 'pointer')
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.style('font', '10px verdana')
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.on('mouseover', d => drawDashboard(d));
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const twitterLine = d3.line()
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.x(d => xScale(d.year))
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.y(d => yScale(d.followers.twitter));
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lineGraph.append('path')
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.attr('d', twitterLine(data))
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.attr('stroke', twitterColor)
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.attr('stroke-width', 3)
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.attr('fill', 'transparent');
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const tumblrLine = d3.line()
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.x(d => xScale(d.year))
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.y(d => yScale(d.followers.tumblr));
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lineGraph.append('path')
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.attr('d', tumblrLine(data))
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.attr('stroke', tumblrColor)
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.attr('stroke-width', 3)
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.attr('fill', 'transparent');
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const instagramLine = d3.line()
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.x(d => xScale(d.year))
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.y(d => yScale(d.followers.instagram));
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lineGraph.append('path')
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.attr('d', instagramLine(data))
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.attr('stroke', instagramColor)
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.attr('stroke-width', 3)
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.attr('fill', 'transparent');
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lineGraph.selectAll('twitter-circles')
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.data(data)
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.enter()
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.append('circle')
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.attr('cx', d => xScale(d.year))
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.attr('cy', d => yScale(d.followers.twitter))
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.attr('r', 6)
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.attr('fill', 'white')
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.attr('stroke', twitterColor)
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.style('cursor', 'pointer')
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lineGraph.selectAll('tumblr-circles')
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.data(data)
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.enter()
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.append('circle')
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.attr('cx', d => xScale(d.year))
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.attr('cy', d => yScale(d.followers.tumblr))
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.attr('r', 6)
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.attr('fill', 'white')
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.attr('stroke', tumblrColor)
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.style('cursor', 'pointer')
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lineGraph.selectAll('instagram-circles')
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.data(data)
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.enter()
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.append('circle')
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.attr('cx', d => xScale(d.year))
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.attr('cy', d => yScale(d.followers.instagram))
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.attr('r', 6)
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.attr('fill', 'white')
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.attr('stroke', instagramColor)
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.style('cursor', 'pointer')
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const rightDashboard = d3.select('.dashboard')
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.append('div');
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const pieGraph = rightDashboard.append('svg')
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.attr('width', 200)
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.attr('height', 200)
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.style('position', 'relative')
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.style('left', '20px');
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const pieArc = d3.arc()
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.outerRadius(100)
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.innerRadius(0);
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const pieColors = d3.scaleOrdinal()
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.domain(data[index].followers)
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.range([twitterColor, tumblrColor, instagramColor]);
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const pie = d3.pie()
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.value(d => d.value);
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const pieGraphData = pieGraph.selectAll('pieSlices')
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.data(pie(d3.entries(data[index].followers)))
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.enter()
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.append('g')
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.attr('transform', 'translate(100, 100)');
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pieGraphData.append('path')
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.attr('d', pieArc)
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.attr('fill', d => pieColors(d.data.key))
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.attr('stroke', 'white')
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.attr('stroke-width', 2);
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pieGraphData.append('text')
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.text(d => {
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const values = d3.values(data[index].followers);
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const sum = d3.sum(values);
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const percent = d.data.value/sum;
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return `${ Math.round(percent*100) }%`;
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})
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.attr('transform', d => `translate(${pieArc.centroid(d)})`)
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.style('text-anchor', 'middle')
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.style('font', '10px verdana');
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const legend = rightDashboard.append('table')
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.attr('width', 200)
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.attr('height', 120)
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.style('font', '12px verdana')
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.style('position', 'relative')
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.style('top', '30px');
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const legendTitle = legend.append('thead')
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.append('tr')
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.append('th')
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.text('2020 followers')
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.attr('colspan', 3)
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.style('position', 'relative')
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.style('left', '20px');
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const legendRows = legend.append('tbody')
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.selectAll('tr')
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.data(d3.entries(data[index].followers))
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.enter()
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.append('tr');
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legendRows.append('td')
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.text(d => d.key)
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.attr('align', 'right');
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legendRows.append('td')
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.attr('align', 'center')
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.append('div')
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.style('width', '16px')
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.style('height', '16px')
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.style('background-color', d => pieColors(d.key))
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legendRows.append('td')
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.text(d => d.value)
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.attr('align', 'left');
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}
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drawDashboard(2020);
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</script>
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```
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