freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/increment-a-number-with-javascript.md

---
id: 56533eb9ac21ba0edf2244ac
title: Increment a Number with JavaScript
challengeType: 1
videoUrl: 'https://scrimba.com/c/ca8GLT9'
forumTopicId: 18201
dashedName: increment-a-number-with-javascript
---

# --description--

You can easily <dfn>increment</dfn> or add one to a variable with the `++` operator.

`i++;`

is the equivalent of

`i = i + 1;`

**Note:** The entire line becomes `i++;`, eliminating the need for the equal sign.

# --instructions--

Change the code to use the `++` operator on `myVar`.

# --hints--

`myVar` should equal `88`.

```js
assert(myVar === 88);
```

You should not use the assignment operator.

```js
assert(
  /var\s*myVar\s*=\s*87;\s*\/*.*\s*([+]{2}\s*myVar|myVar\s*[+]{2});/.test(code)
);
```

You should use the `++` operator.

```js
assert(/[+]{2}\s*myVar|myVar\s*[+]{2}/.test(code));
```

You should not change code above the specified comment.

```js
assert(/var myVar = 87;/.test(code));
```

# --seed--

## --after-user-code--

```js
(function(z){return 'myVar = ' + z;})(myVar);
```

## --seed-contents--

```js
var myVar = 87;

// Only change code below this line
myVar = myVar + 1;
```

# --solutions--

```js
var myVar = 87;
myVar++;
```