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---
id: 5d8a4cfbe6b6180ed9a1c9f9
title: Part 28
challengeType: 0
2021-01-13 03:31:00 +01:00
dashedName: part-28
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---
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# --description--
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Create a new `const` named `xAxis` and set the value equal to `d3.axisBottom(xScale)` . This will create another axis for the bottom of the graph using the information from `xScale` . Although the axes do not display yet, they have the information they need to display correctly.
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# --hints--
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test-text
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```js
assert(
typeof xAxis === 'function' & &
/xAxis\s*=\s*d3\.axisBottom\(\s*xScale\)/.test(code)
);
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```
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# --seed--
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## --before-user-code--
```html
<!DOCTYPE html>
< html >
< head >
< title > D3 Dashboard< / title >
< style >
body {
background-color: #ccc ;
padding: 100px 10px;
}
.dashboard {
width: 980px;
height: 500px;
background-color: white;
box-shadow: 5px 5px 5px 5px #888 ;
margin: auto;
display: flex;
align-items: center;
}
< / style >
< / head >
< body >
< div class = "dashboard" > < / div >
< / body >
< / html >
```
## --seed-contents--
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```html
< script >
const data = [
{ year: 2012, followers: { twitter: 2594, tumblr: 401, instagram: 83 }},
{ year: 2013, followers: { twitter: 3049, tumblr: 440, instagram: 192 }},
{ year: 2014, followers: { twitter: 3511, tumblr: 415, instagram: 511 }},
{ year: 2015, followers: { twitter: 3619, tumblr: 492, instagram: 1014 }},
{ year: 2016, followers: { twitter: 4046, tumblr: 543, instagram: 2066 }},
{ year: 2017, followers: { twitter: 3991, tumblr: 701, instagram: 3032 }},
{ year: 2018, followers: { twitter: 3512, tumblr: 1522, instagram: 4512 }},
{ year: 2019, followers: { twitter: 3274, tumblr: 1989, instagram: 4715 }},
{ year: 2020, followers: { twitter: 2845, tumblr: 2040, instagram: 4801 }}
];
< / script >
< script >
const svgMargin = 70,
svgWidth = 700,
svgHeight = 500,
twitterColor = '#7cd9d1 ',
tumblrColor = '#f6dd71 ',
instagramColor = '#fd9b98 ';
const lineGraph = d3.select('.dashboard')
.append('svg')
.attr('width', svgWidth)
.attr('height', svgHeight);
const yScale = d3.scaleLinear()
.domain([0, 5000])
.range([svgHeight - svgMargin, svgMargin]);
const xScale = d3.scaleLinear()
.domain([2012, 2020])
.range([svgMargin, svgWidth - svgMargin]);
const yAxis = d3.axisLeft(yScale)
< / script >
```
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# --solutions--
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```html
< script >
const data = [
{ year: 2012, followers: { twitter: 2594, tumblr: 401, instagram: 83 }},
{ year: 2013, followers: { twitter: 3049, tumblr: 440, instagram: 192 }},
{ year: 2014, followers: { twitter: 3511, tumblr: 415, instagram: 511 }},
{ year: 2015, followers: { twitter: 3619, tumblr: 492, instagram: 1014 }},
{ year: 2016, followers: { twitter: 4046, tumblr: 543, instagram: 2066 }},
{ year: 2017, followers: { twitter: 3991, tumblr: 701, instagram: 3032 }},
{ year: 2018, followers: { twitter: 3512, tumblr: 1522, instagram: 4512 }},
{ year: 2019, followers: { twitter: 3274, tumblr: 1989, instagram: 4715 }},
{ year: 2020, followers: { twitter: 2845, tumblr: 2040, instagram: 4801 }}
];
< / script >
< script >
const svgMargin = 70,
svgWidth = 700,
svgHeight = 500,
twitterColor = '#7cd9d1 ',
tumblrColor = '#f6dd71 ',
instagramColor = '#fd9b98 ';
const lineGraph = d3.select('.dashboard')
.append('svg')
.attr('width', svgWidth)
.attr('height', svgHeight);
const yScale = d3.scaleLinear()
.domain([0, 5000])
.range([svgHeight - svgMargin, svgMargin]);
const xScale = d3.scaleLinear()
.domain([2012, 2020])
.range([svgMargin, svgWidth - svgMargin]);
const yAxis = d3.axisLeft(yScale)
const xAxis = d3.axisBottom(xScale)
< / script >
```
