---
id: 5d7925329445167ecc2ac9c9
title: Part 4
challengeType: 0
---
# --description--
In JavaScript, functions are first class. This means that they can be used like any other values - for example, they can be assigned to variables.
Assign `add` to a new variable `addVar`.
# --hints--
See description above for instructions.
```js
assert(code.replace(/\s/g, '').includes('constaddVar=add'));
```
# --seed--
## --before-user-code--
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Spreadsheet</title>
<style>
#container {
display: grid;
grid-template-columns: 50px repeat(10, 200px);
grid-template-rows: repeat(11, 30px);
}
.label {
background-color: lightgray;
text-align: center;
vertical-align: middle;
line-height: 30px;
}
</style>
</head>
<body>
<div id="container">
<div></div>
</div>
```
## --after-user-code--
```html
</body>
</html>
```
## --seed-contents--
```html
<script>
function add(x, y) {
return x + y;
}
const infixToFunction = {};
</script>
```
# --solutions--
```html
<script>
function add(x, y) {
return x + y;
}
const addVar = add;
const infixToFunction = {};
</script>
```