Hi there!

I have a newbie question. My task is the following.

There is the array “courses” consisting of a unknown number of arrays with strings that show the students of the course. I want to find out which course in “courses” is the smallest one. My thinking was the following.

// Find out how many courses currently exist

var coursesCount = courses.length

```
// Compare the number of students of each course with the next one and filter out the smallest one
for (var i = 0; i <= coursesCount; i++){
if (i == 0){
var smallestCourse = courses[i];
}
else {
if (courses[i].length < smallestCourse.length){
smallestCourse = courses[i];
}
}
}
```

// Tell me what members are in the smallest course

console.log(smallestCourse)

The problem is that I always receive the error message: Uncaught ReferenceError: course is not defined at red line

I cannot wrap my head around it. Why should course [i] be undefined since the loop is running all numbers from 0 til the max number of courses?