var

Challenge [Increment a Number with JavaScript](https://www.freecodecamp.cn/challenges/increment-a-number-with-javascript#?solution=var%20myVar%20%3D%2087%3B%0A%0A%2F%2F%20%E8%AF%B7%E5%8F%AA%E4%BF%AE%E6%94%B9%E8%BF%99%E6%9D%A1%E6%B3%A8%E9%87%8A%E4%BB%A5%E4%B8%8B%E7%9A%84%E4%BB%A3%E7%A0%81%0Avar%20myVar%20%3D%20i%2B%2B%3B%0A%0A) has an issue.
User Agent is: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36.
Please describe how to reproduce this issue, and include links to screenshots if possible.

My code:
```javascript
var myVar = 87;

// 请只修改这条注释以下的代码
var myVar = i++;

```