114 lines
3.0 KiB
Markdown
114 lines
3.0 KiB
Markdown
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---
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id: 5d8a4cfbe6b6180ed9a1c9ee
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title: Part 17
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challengeType: 0
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dashedName: part-17
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---
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# --description--
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When you added the D3 library earlier, it put an object named `d3` in your project with a bunch of functions. One of them is `select`; you can use dot notation to access this and the other functions from the object. Create a new variable named `lineGraph` and use `d3.select` to select the `.dashboard` element. Here's an example of something similar:
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```js
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const variableName = d3.select('.className')
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```
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# --hints--
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test-text
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```js
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assert(lineGraph._groups[0][0] === $('.dashboard')[0]);
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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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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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</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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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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</script>
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```
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