For this challenge, we need to use the forEach method to copy

only the first 2 characters of each string in the days array.

And store the abbreviations in the dayAbbreviations array.

Like I did earlier, I'm going to copy and paste the code for

this challenge into the Atom text editor in order to make the code easier to read.

So the days array contains seven strings, one string for each day of the week.

And what we want to end up with is an abbreviation for each of those strings or

each of those days.

So Su for Sunday.

Mo for Monday and so on.

Let's look at my solution.

Again, I started by adding the call for each method.

And then, the anonymous call back function using arrow function syntax.

So, days.forEach.

And, I use day for the current value parameter name.

Day, and then a fat arrow.

Then I added a set of curly braces to define a code block.

Let's add a variable for the dayAbbreviation.

So const dayAbbreviation.

To get the first two characters of each day string, I used the slice method.

So day.slice.

Now, you could also use substring.

Or substr.

Both of those methods would also work fine.

I'm going to go ahead and switch back to the slice method.

The first parameter for the slice method is the begin index.

The zero based index at the string extraction should begin with.

The second parameter is the end index.

The index that the string extraction should end with.

It's worth noting that the character at this index won't be included.

Let's take a look at the string for Sunday.

So S is at an index of 0.

U is at an index of 1.

And n is at an index of 2.

So we want to extract Su, but not n.

So with the slice method, we'll supply the 2.

Meaning that we want to select up to but not including the index of 2.

Now that I have my dayAbbreviation, I just pushed it onto the dayAbbreviations array.

So dayAbbreviations.push(dayAbbreviation).

And that's my solution.

Now, we can leave it just as it is, or we could simplify it.

We can do that by eliminating the intermediate variable, (dayAbbreviation).

To do that, let's cut this code and place it inside of the call to the push method.

Then we can eliminate this line of code.

And we can actually eliminate the code block itself.

There.

That looks a little cleaner, doesn't it?

Ready for the next challenge?

We'll see you in a bit with my solution.